95 mph...seriously??
11-22-2014, 03:39 PM
#32
Senior Member
this is your governor (speed limiter). most f150's, if not all, are set to 95mph. your "SMART KEY" is for restricting (in case you want to let your son/daughter take it out). my smart key limits my music volume to 1/2 way. and my speed to 85MPH.
found this out racing an old f150 and f250, I stopped at 95mph.
my mechanic took the governor off. so I should be able to hit at least 120, but I haven't tried (considering I have a 6 inch lift)
found this out racing an old f150 and f250, I stopped at 95mph.
my mechanic took the governor off. so I should be able to hit at least 120, but I haven't tried (considering I have a 6 inch lift)
11-22-2014, 03:45 PM
#34
11-22-2014, 03:47 PM
#35
Extreme DIY Homeowner
Why would you buy tires that were not rated over 100 mph ?
I'd love to be able to limit a vehicle to maybe 60 when my son starts to drive
But lots of people get into trouble at speeds far less then 50 mph
Every accident I've been in has been less then 30 mph
May be only once you need to put the pedal to the metal in an emergency, but I don't want somebody deciding that limit for me
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REFINE (11-22-2014)
11-22-2014, 04:01 PM
#36
I Like Tires
My stock tires were rated for 112 mph, new tires 118mph Why would you buy tires that were not rated over 100 mph ? I'd love to be able to limit a vehicle to maybe 60 when my son starts to drive But lots of people get into trouble at speeds far less then 50 mph Every accident I've been in has been less then 30 mph May be only once you need to put the pedal to the metal in an emergency, but I don't want somebody deciding that limit for me
1. Ford has to set some kind of limit to keep people from doing something dumb, like exceeding the speed rating of the tire.
2. The average driver doesn't understand basic tire maintenance and doesn't check their air pressure on a regular enough basis that they should even be thinking about driving that fast. Wouldn't be fun to have a blow out going that fast.
There is no federal regulation requiring tires to go over 100mph. Mine are only speed rated to 87mph and the set previous was 99mph.
Ford set the limiter where it's at for a good safety margin in the case of improper inflation which is very common. Not so much in TPMS vehicles, but there are still drivers who don't know what that is. I get customers every day telling me their nail detector light is on. Even had a customer tell me it was her tire balance light.
When the average consumer starts making a better effort to maintain and understand there vehicle things like that won't be necessary, but that will never happen.
Last edited by BassAckwards; 11-22-2014 at 04:04 PM.
11-22-2014, 04:29 PM
#37
The majority of commenters who commented on the high speed test recommended that the agency adopt speeds for this test based on the rated speed of the tire. Commenters suggested this approach, arguing that consumers rely upon speed ratings to select an appropriate tire for their vehicles. Also, some commenters noted that calculating the test speed based on the speed rating of the tire is an approach identical to that used in the European tire regulation, ECE R30, GTS-2000, and in the Society of Engineers (SAE) Recommended Practice J1561, Laboratory Speed Test Procedure for Passenger Car Tires. Some commenters stated that speed steps based on speed ratings provide a more stringent test and greater promise for achieving future international harmonization. The Alliance commented that the agency should consider the high speed test in GTS-2000 for harmonization reasons and also because there is no evidence of a safety problem with tires complying with ECE R 30, which is the European high speed test procedure upon which GTS-2000 is modeled. RMA suggested that if the agency did not base test speeds on speed ratings, then it should reduce the test speeds for LT tires to 130, 140, and 150 km/h to approximate the same level of stringency for LT tires tested on a test wheel (temperature increase) experienced by P-metric tires tested on a test wheel. GM suggested that we consider establishing 120 mph as a fixed test speed value since many of their light trucks are equipped with LT tires speed rated Q and R 160 km/h (99 mph) and 170 km/h (106 mph), respectively.
NHTSA has decided to adopt the proposed speeds of 140, 150, 160 km/h (87, 93, 99 mph) for P-metric and LT tires. These speeds represent a substantial increase in the level of stringency from the test speeds currently used in FMVSS No. 109 and 119 for which tires are tested at 75, 80, and 85 mph for 30 minutes at each speed. This approach more closely mirrors the upper limit of real world operational speeds in the United States beyond which drivers have few opportunities to operate their vehicles. These speeds will also eliminate from production any current tires whose performance just achieved the lowest rung of Temperature resistance rating in our Uniform Tire Quality Grading standards (UTQG), "C" rated tires. Tires with a UTQG temperature grade "C" are less resistant to heat buildup as compared to tires rated "A" or "B."
Drivers in the U.S. do not typically operate their vehicles at speeds above 100 mph. Maximum speed limits on U.S. highways range from 55 to 75 mph. Some vehicle manufacturers, e.g.,......................... GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph....................................... NHTSA also believes that an upper test speed threshold of 160 km/h (99 mph) ensures a minimum level of safe operation that is 25-30 mph beyond typical speed limits on interstate highways in the U.S.
Under the UTQG test procedure, a tire is rated "C" if it fails to complete the test at 100 mph for 30 minutes. The test is initiated at 75 mph for 30 minutes and then successively increased in 5 mph increments for 30 minutes each until the tire has run at 115 mph for 30 minutes. Therefore, tires with a temperature grading of C may be able to complete 30 minutes at speeds of 75, 80, 85, 90, and 95 mph (120, 128, 136, 144, and 152 km/h), but not complete the 100-mph (160 km/h) step. By establishing the final step of the high speed test at 160 km/h (99 mph), the agency expects that a larger number of tires with a temperature grade of "C" may fail the minimum performance test in the tire standard.
This decision does not prohibit tire manufacturers from continuing the practice of using speed ratings as a basis for establishing maximum design speed characteristics for tire performance. As discussed in the Tire Safety Information final rule, the agency neither requires nor prohibits that tires be labeled with a speed rating. Additionally, we do not prohibit vehicle manufacturers from specifying that consumers purchase replacement tires labeled with the same speed rating as the OE tire.
The agency has decided not to reduce the test speed for LT tires. The agency is not aware of any data, nor has it been provided with any, that suggest that light trucks equipped with LT tires are operated at lower speeds than light trucks equipped with P-metric tires. In fact, tire industry data indicate that light truck owners choose LT tires as replacement tires more often than the installation rate for LT tires by the OE vehicle manufacturer. (Modern Tire Dealer (www.mt.dealer.com), RMA Factbook 2002)
The agency is also adopting a 2-hour break-in period for the test. Current FMVSS No. 109 requirements include a 2-hour break-in. The NPRM proposed a 15-minute break-in for the test, essentially because RMA had indicated in connection with GTS-2000 that a break-in period was unnecessary. Since that time, RMA has reversed its position on this issue based on its high speed testing. Additionally, the agency, based on its own testing and experience with the 2-hour break-in period believes that this length of break-in enhances test repeatability by making the surface of the tire consistent, e.g., removing tire "whiskers" from the tire tread surface.
Right of the nhtsa website worth reading and yes there is federal regulations that doesn't dictate speed rating but establish a base line for testing and tire rating for speed. Its a loophole that manufactures use to get consumers to buy there tires due to speed rating.
GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph
NHTSA has decided to adopt the proposed speeds of 140, 150, 160 km/h (87, 93, 99 mph) for P-metric and LT tires. These speeds represent a substantial increase in the level of stringency from the test speeds currently used in FMVSS No. 109 and 119 for which tires are tested at 75, 80, and 85 mph for 30 minutes at each speed. This approach more closely mirrors the upper limit of real world operational speeds in the United States beyond which drivers have few opportunities to operate their vehicles. These speeds will also eliminate from production any current tires whose performance just achieved the lowest rung of Temperature resistance rating in our Uniform Tire Quality Grading standards (UTQG), "C" rated tires. Tires with a UTQG temperature grade "C" are less resistant to heat buildup as compared to tires rated "A" or "B."
Drivers in the U.S. do not typically operate their vehicles at speeds above 100 mph. Maximum speed limits on U.S. highways range from 55 to 75 mph. Some vehicle manufacturers, e.g.,......................... GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph....................................... NHTSA also believes that an upper test speed threshold of 160 km/h (99 mph) ensures a minimum level of safe operation that is 25-30 mph beyond typical speed limits on interstate highways in the U.S.
Under the UTQG test procedure, a tire is rated "C" if it fails to complete the test at 100 mph for 30 minutes. The test is initiated at 75 mph for 30 minutes and then successively increased in 5 mph increments for 30 minutes each until the tire has run at 115 mph for 30 minutes. Therefore, tires with a temperature grading of C may be able to complete 30 minutes at speeds of 75, 80, 85, 90, and 95 mph (120, 128, 136, 144, and 152 km/h), but not complete the 100-mph (160 km/h) step. By establishing the final step of the high speed test at 160 km/h (99 mph), the agency expects that a larger number of tires with a temperature grade of "C" may fail the minimum performance test in the tire standard.
This decision does not prohibit tire manufacturers from continuing the practice of using speed ratings as a basis for establishing maximum design speed characteristics for tire performance. As discussed in the Tire Safety Information final rule, the agency neither requires nor prohibits that tires be labeled with a speed rating. Additionally, we do not prohibit vehicle manufacturers from specifying that consumers purchase replacement tires labeled with the same speed rating as the OE tire.
The agency has decided not to reduce the test speed for LT tires. The agency is not aware of any data, nor has it been provided with any, that suggest that light trucks equipped with LT tires are operated at lower speeds than light trucks equipped with P-metric tires. In fact, tire industry data indicate that light truck owners choose LT tires as replacement tires more often than the installation rate for LT tires by the OE vehicle manufacturer. (Modern Tire Dealer (www.mt.dealer.com), RMA Factbook 2002)
The agency is also adopting a 2-hour break-in period for the test. Current FMVSS No. 109 requirements include a 2-hour break-in. The NPRM proposed a 15-minute break-in for the test, essentially because RMA had indicated in connection with GTS-2000 that a break-in period was unnecessary. Since that time, RMA has reversed its position on this issue based on its high speed testing. Additionally, the agency, based on its own testing and experience with the 2-hour break-in period believes that this length of break-in enhances test repeatability by making the surface of the tire consistent, e.g., removing tire "whiskers" from the tire tread surface.
Right of the nhtsa website worth reading and yes there is federal regulations that doesn't dictate speed rating but establish a base line for testing and tire rating for speed. Its a loophole that manufactures use to get consumers to buy there tires due to speed rating.
GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph
11-22-2014, 07:06 PM
#38
I think you have mistaken my complaint. It's not like I am out ripping around recklessly and barreling down the highway with my speedo buried. However, if I ever need or want to utilize my trucks full capabilities, I certainly should be able to do so. I find it unsettling that, like so many other things, the powers at be find it their duty to put limitations and regulations on my property to keep me safe.
11-22-2014, 07:44 PM
#39
The majority of commenters who commented on the high speed test recommended that the agency adopt speeds for this test based on the rated speed of the tire. Commenters suggested this approach, arguing that consumers rely upon speed ratings to select an appropriate tire for their vehicles. Also, some commenters noted that calculating the test speed based on the speed rating of the tire is an approach identical to that used in the European tire regulation, ECE R30, GTS-2000, and in the Society of Engineers (SAE) Recommended Practice J1561, Laboratory Speed Test Procedure for Passenger Car Tires. Some commenters stated that speed steps based on speed ratings provide a more stringent test and greater promise for achieving future international harmonization. The Alliance commented that the agency should consider the high speed test in GTS-2000 for harmonization reasons and also because there is no evidence of a safety problem with tires complying with ECE R 30, which is the European high speed test procedure upon which GTS-2000 is modeled. RMA suggested that if the agency did not base test speeds on speed ratings, then it should reduce the test speeds for LT tires to 130, 140, and 150 km/h to approximate the same level of stringency for LT tires tested on a test wheel (temperature increase) experienced by P-metric tires tested on a test wheel. GM suggested that we consider establishing 120 mph as a fixed test speed value since many of their light trucks are equipped with LT tires speed rated Q and R 160 km/h (99 mph) and 170 km/h (106 mph), respectively.
NHTSA has decided to adopt the proposed speeds of 140, 150, 160 km/h (87, 93, 99 mph) for P-metric and LT tires. These speeds represent a substantial increase in the level of stringency from the test speeds currently used in FMVSS No. 109 and 119 for which tires are tested at 75, 80, and 85 mph for 30 minutes at each speed. This approach more closely mirrors the upper limit of real world operational speeds in the United States beyond which drivers have few opportunities to operate their vehicles. These speeds will also eliminate from production any current tires whose performance just achieved the lowest rung of Temperature resistance rating in our Uniform Tire Quality Grading standards (UTQG), "C" rated tires. Tires with a UTQG temperature grade "C" are less resistant to heat buildup as compared to tires rated "A" or "B."
Drivers in the U.S. do not typically operate their vehicles at speeds above 100 mph. Maximum speed limits on U.S. highways range from 55 to 75 mph. Some vehicle manufacturers, e.g.,......................... GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph....................................... NHTSA also believes that an upper test speed threshold of 160 km/h (99 mph) ensures a minimum level of safe operation that is 25-30 mph beyond typical speed limits on interstate highways in the U.S.
Under the UTQG test procedure, a tire is rated "C" if it fails to complete the test at 100 mph for 30 minutes. The test is initiated at 75 mph for 30 minutes and then successively increased in 5 mph increments for 30 minutes each until the tire has run at 115 mph for 30 minutes. Therefore, tires with a temperature grading of C may be able to complete 30 minutes at speeds of 75, 80, 85, 90, and 95 mph (120, 128, 136, 144, and 152 km/h), but not complete the 100-mph (160 km/h) step. By establishing the final step of the high speed test at 160 km/h (99 mph), the agency expects that a larger number of tires with a temperature grade of "C" may fail the minimum performance test in the tire standard.
This decision does not prohibit tire manufacturers from continuing the practice of using speed ratings as a basis for establishing maximum design speed characteristics for tire performance. As discussed in the Tire Safety Information final rule, the agency neither requires nor prohibits that tires be labeled with a speed rating. Additionally, we do not prohibit vehicle manufacturers from specifying that consumers purchase replacement tires labeled with the same speed rating as the OE tire.
The agency has decided not to reduce the test speed for LT tires. The agency is not aware of any data, nor has it been provided with any, that suggest that light trucks equipped with LT tires are operated at lower speeds than light trucks equipped with P-metric tires. In fact, tire industry data indicate that light truck owners choose LT tires as replacement tires more often than the installation rate for LT tires by the OE vehicle manufacturer. (Modern Tire Dealer (www.mt.dealer.com), RMA Factbook 2002)
The agency is also adopting a 2-hour break-in period for the test. Current FMVSS No. 109 requirements include a 2-hour break-in. The NPRM proposed a 15-minute break-in for the test, essentially because RMA had indicated in connection with GTS-2000 that a break-in period was unnecessary. Since that time, RMA has reversed its position on this issue based on its high speed testing. Additionally, the agency, based on its own testing and experience with the 2-hour break-in period believes that this length of break-in enhances test repeatability by making the surface of the tire consistent, e.g., removing tire "whiskers" from the tire tread surface.
Right of the nhtsa website worth reading and yes there is federal regulations that doesn't dictate speed rating but establish a base line for testing and tire rating for speed. Its a loophole that manufactures use to get consumers to buy there tires due to speed rating.
GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph
NHTSA has decided to adopt the proposed speeds of 140, 150, 160 km/h (87, 93, 99 mph) for P-metric and LT tires. These speeds represent a substantial increase in the level of stringency from the test speeds currently used in FMVSS No. 109 and 119 for which tires are tested at 75, 80, and 85 mph for 30 minutes at each speed. This approach more closely mirrors the upper limit of real world operational speeds in the United States beyond which drivers have few opportunities to operate their vehicles. These speeds will also eliminate from production any current tires whose performance just achieved the lowest rung of Temperature resistance rating in our Uniform Tire Quality Grading standards (UTQG), "C" rated tires. Tires with a UTQG temperature grade "C" are less resistant to heat buildup as compared to tires rated "A" or "B."
Drivers in the U.S. do not typically operate their vehicles at speeds above 100 mph. Maximum speed limits on U.S. highways range from 55 to 75 mph. Some vehicle manufacturers, e.g.,......................... GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph....................................... NHTSA also believes that an upper test speed threshold of 160 km/h (99 mph) ensures a minimum level of safe operation that is 25-30 mph beyond typical speed limits on interstate highways in the U.S.
Under the UTQG test procedure, a tire is rated "C" if it fails to complete the test at 100 mph for 30 minutes. The test is initiated at 75 mph for 30 minutes and then successively increased in 5 mph increments for 30 minutes each until the tire has run at 115 mph for 30 minutes. Therefore, tires with a temperature grading of C may be able to complete 30 minutes at speeds of 75, 80, 85, 90, and 95 mph (120, 128, 136, 144, and 152 km/h), but not complete the 100-mph (160 km/h) step. By establishing the final step of the high speed test at 160 km/h (99 mph), the agency expects that a larger number of tires with a temperature grade of "C" may fail the minimum performance test in the tire standard.
This decision does not prohibit tire manufacturers from continuing the practice of using speed ratings as a basis for establishing maximum design speed characteristics for tire performance. As discussed in the Tire Safety Information final rule, the agency neither requires nor prohibits that tires be labeled with a speed rating. Additionally, we do not prohibit vehicle manufacturers from specifying that consumers purchase replacement tires labeled with the same speed rating as the OE tire.
The agency has decided not to reduce the test speed for LT tires. The agency is not aware of any data, nor has it been provided with any, that suggest that light trucks equipped with LT tires are operated at lower speeds than light trucks equipped with P-metric tires. In fact, tire industry data indicate that light truck owners choose LT tires as replacement tires more often than the installation rate for LT tires by the OE vehicle manufacturer. (Modern Tire Dealer (www.mt.dealer.com), RMA Factbook 2002)
The agency is also adopting a 2-hour break-in period for the test. Current FMVSS No. 109 requirements include a 2-hour break-in. The NPRM proposed a 15-minute break-in for the test, essentially because RMA had indicated in connection with GTS-2000 that a break-in period was unnecessary. Since that time, RMA has reversed its position on this issue based on its high speed testing. Additionally, the agency, based on its own testing and experience with the 2-hour break-in period believes that this length of break-in enhances test repeatability by making the surface of the tire consistent, e.g., removing tire "whiskers" from the tire tread surface.
Right of the nhtsa website worth reading and yes there is federal regulations that doesn't dictate speed rating but establish a base line for testing and tire rating for speed. Its a loophole that manufactures use to get consumers to buy there tires due to speed rating.
GM and Ford, electronically restrict most of their vehicles top speeds at approximately 106 mph
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depami (11-22-2014)
11-22-2014, 08:00 PM
#40
The speed limiter is in place NOT FOR YOU, it's in place for the integrity of the machine.
I recall back in the late 90's-2k's Crown Vic police interceptors were limited to 130mph and a lot of transmission output shaft bushings would spin creating a leak and grenading the trans.
Ford issued a recall to bring the limiter down to 108 and pissed off a lot of law enforcement agencies. When enough complaints about not being able to catch up to some idiot out running them on the interstate they told us to reprogram those cars only and use a Lincoln Town car vin#, that brought them up to 120mph but not the original 130 they were set to off the line.
It was enough to appease the leo's
Escambia Co. Fla sheriffs dpt, Escambia Co. Alabama sheriffs dpt and the Alabama state police were all my customers.
I recall back in the late 90's-2k's Crown Vic police interceptors were limited to 130mph and a lot of transmission output shaft bushings would spin creating a leak and grenading the trans.
Ford issued a recall to bring the limiter down to 108 and pissed off a lot of law enforcement agencies. When enough complaints about not being able to catch up to some idiot out running them on the interstate they told us to reprogram those cars only and use a Lincoln Town car vin#, that brought them up to 120mph but not the original 130 they were set to off the line.
It was enough to appease the leo's
Escambia Co. Fla sheriffs dpt, Escambia Co. Alabama sheriffs dpt and the Alabama state police were all my customers.
Last edited by RLXXI; 11-22-2014 at 08:02 PM.