E load rating tire pressure thread
01-18-2011, 08:45 PM
#11
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Did you even read what I posted. That middle section is right off BFG's website. I says if you read it that if its not the same tire size call or email them with your OEM tire size and pressure and they will give you the right pressure for your new tires.
They make the tires, they will be able to tell you the right pressure. Just because there are load range E does not change that above information.
The load carrying ability of tires is in direct relation to the contact patch of the tire and inflation PSI. The tire size will slightly change the contact patch but not by a huge amount. In the majority of cases it won't be affected more than 5 PSI unless there is a huge change in tire size. This leaves inflation pressure. In order to increase the load capability of the tire, it is constructed to allow a higher inflation pressure. This does not by itself require the increase in pressure in an unloaded truck. They only require higher PSI in order to carry the higher load rating.
They make the tires, they will be able to tell you the right pressure. Just because there are load range E does not change that above information.
The load carrying ability of tires is in direct relation to the contact patch of the tire and inflation PSI. The tire size will slightly change the contact patch but not by a huge amount. In the majority of cases it won't be affected more than 5 PSI unless there is a huge change in tire size. This leaves inflation pressure. In order to increase the load capability of the tire, it is constructed to allow a higher inflation pressure. This does not by itself require the increase in pressure in an unloaded truck. They only require higher PSI in order to carry the higher load rating.
01-18-2011, 09:04 PM
#12
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any tire I have ever seen will tell you right on the sidewall what the recommended psi for that tire is. My last set of e rated tires took 85 psi and they lasted me 60k they were Wal-Mart tires I never had an issue with them but for the life of I cannot think of the name.
01-18-2011, 09:07 PM
#13
Senior Member
That's weird, every tire I have ever seen will tell you right on the sidewall what the MAXIMUM psi for that tire is...
01-18-2011, 09:12 PM
#14
Senior Member
Originally Posted by ftrucktough
That's weird, every tire I have ever seen will tell you right on the sidewall what the MAXIMUM psi for that tire is...
01-18-2011, 09:39 PM
#16
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So I'd recommend running 40-45PSI empty, higher if loaded/towing...
let's see what BFG has to say, give them a call.
01-18-2011, 10:10 PM
#17
I Like Tires
Did you even read what I posted. That middle section is right off BFG's website. I says if you read it that if its not the same tire size call or email them with your OEM tire size and pressure and they will give you the right pressure for your new tires.
They make the tires, they will be able to tell you the right pressure. Just because there are load range E does not change that above information.
The load carrying ability of tires is in direct relation to the contact patch of the tire and inflation PSI. The tire size will slightly change the contact patch but not by a huge amount. In the majority of cases it won't be affected more than 5 PSI unless there is a huge change in tire size. This leaves inflation pressure. In order to increase the load capability of the tire, it is constructed to allow a higher inflation pressure. This does not by itself require the increase in pressure in an unloaded truck. They only require higher PSI in order to carry the higher load rating.
They make the tires, they will be able to tell you the right pressure. Just because there are load range E does not change that above information.
The load carrying ability of tires is in direct relation to the contact patch of the tire and inflation PSI. The tire size will slightly change the contact patch but not by a huge amount. In the majority of cases it won't be affected more than 5 PSI unless there is a huge change in tire size. This leaves inflation pressure. In order to increase the load capability of the tire, it is constructed to allow a higher inflation pressure. This does not by itself require the increase in pressure in an unloaded truck. They only require higher PSI in order to carry the higher load rating.
Me personally, I have a ~5300lbs truck and I have been running them between 55-60psi they are wearing very even the ride is stiff, but at least they are wearing even. Interesting to note when I first got the wheels and tires I took a trip to San Antonio reaching speeds of 80, assuming that when I got my tires they would be at a proper inflation
. They were at 35psi the ride was so cushy and nice but I was impressed that you could run them that low at that kinda speed. Unfortunately they don't wear even like that so I had to bump up the pressure and lose my cushy ride
Edit: I have 33" Goodyear Wrangler DuraTracs E Load Range but this should still be similar
Last edited by BassAckwards; 01-18-2011 at 10:13 PM.
01-19-2011, 05:38 AM
#18
Senior Member
Actually the load range does matter because there are pressures where an E load range tire can't hold as much weight as a D load range, so again all bets are off. Gotta have the E load ranges a little bit higher than you would a D, but thats why they will go all the way to 80. However you are right in that you should be able to call them and they could tell you what to runt hem at.....r
There might be specific brands/models of tires that don't take the same pressure but that should very rarely be the case. The number of ply's doesn't exactly apply any more but Load range D used to typically have 8 Ply side walls and a max inflation pressure of 65 PSI. E's had typically 10 ply side walls and a max inflation pressure of 80 PSI. In a tire the sidewall does not support the weight of the vehicle. It simply allows a higher internal pressure. The same size tire regardless of load range should support the same weight at a given pressure.
01-20-2011, 09:12 AM
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I spoke with BFG today, and they asked for my factory recommended pressure, and factory tires etc.
and this is what they said...
January 20, 2011
Hello Greg,
Thank you for your email. We welcome the opportunity to serve you.
We recommend 50 psi for the new tires. Remember to set the pressure when the tires are cold.
We appreciate your business and thank you for choosing BFGoodrich.
It is our goal to ensure that your issue has been resolved or your question answered to your satisfaction. If we can assist you further, please respond to this email or call us at 1-877-788-8899 (toll free) between 8:00AM and 8:00PM Eastern Time Monday through Friday or between 8:30AM and 4:30PM Eastern Time on Saturday.
Sincerely,
Dale
Consumer Care Department
Certified BFGoodrich Product Expert
and this is what they said...
January 20, 2011
Hello Greg,
Thank you for your email. We welcome the opportunity to serve you.
We recommend 50 psi for the new tires. Remember to set the pressure when the tires are cold.
We appreciate your business and thank you for choosing BFGoodrich.
It is our goal to ensure that your issue has been resolved or your question answered to your satisfaction. If we can assist you further, please respond to this email or call us at 1-877-788-8899 (toll free) between 8:00AM and 8:00PM Eastern Time Monday through Friday or between 8:30AM and 4:30PM Eastern Time on Saturday.
Sincerely,
Dale
Consumer Care Department
Certified BFGoodrich Product Expert