2014 F150 E-Rated Tires for Towing
02-24-2015, 01:07 AM
#41
Senior Member
The load rating and number of ply's are two different factors. For example the stock Scorpion "P" rated 4-ply tires that came on my F150 had a load rating sufficient to meet the RGAWR payload rating (2500lbs each I believe). However with only 4-ply they had weak sidewalls, couldn't take much air-pressure, and as a result "wallow" around a lot while towing. In comparison, the E-rated 10-ply tires I replaced them with can take 80-psi (I only inflate to 60psi) and have much firmer sidewalls. Both still carry the same payload in my case, but the E-rated tires are WAYYYY more firm and don't wallow around going down the road.
If you want an example of weak sidewall wallowing, go out to your rig, put your foot on the top of your tire, and give it a good push. With P rated tires the who rig will wallow and shuffle around all of which is from weak side-wall. With 60psi and E-rated tires, that same test show hardly any movement. Now think about those results going 65mph down the highway with 1k pounds of tongue weight or bed payload.
If you want an example of weak sidewall wallowing, go out to your rig, put your foot on the top of your tire, and give it a good push. With P rated tires the who rig will wallow and shuffle around all of which is from weak side-wall. With 60psi and E-rated tires, that same test show hardly any movement. Now think about those results going 65mph down the highway with 1k pounds of tongue weight or bed payload.
Well Said.
The same exact reason why my 10F150 I switched to the E rated 10 ply tire, the 14 will get the change too before I tow this Spring.
02-24-2015, 05:35 PM
#42
Junior Member
Just wondering for those that make the change to 10 ply tires, how much of hit did you take on mpg. I'm interested in moving up to the Michelin MS2 for exact same reasons you all did. thanks
02-24-2015, 05:40 PM
#43
Senior Member
The Michelin LT-E's are "green" tires and have lower rolling resistance.
But I also dropped down from a heavy 20" rim to a 17" Alloy (for the cheaper tires), so I may have actually reduced the total tire+wheel weight. Not sure though.
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fsdogs (02-24-2015)
02-24-2015, 05:48 PM
#44
Senior Member
I dropped about 1-2 mpg since upgrading to 10ply tires. I think it has to do with the increase tire weight. Just a guess!
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fsdogs (02-24-2015)
02-25-2015, 09:44 AM
#45
You will see a drop in mileage. LT tires are significantly heavier and it takes more fuel to spin that "bigger flywheel". Takes more fuel to get it up to speed also.
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fsdogs (02-25-2015)
02-25-2015, 04:53 PM
#46
Senior Member
On my 10F150 w/17" wheels, The Michelin 10 ply tires did not cut into my mpg, it stayed the same.
I will see how it does with the 18" wheel I am using w/this '14.
I will see how it does with the 18" wheel I am using w/this '14.
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fsdogs (02-25-2015)
03-10-2015, 06:09 PM
#47
I lost mileage with mine after leveling and going to 10 ply tires. Lucky to get 14 now but it's been real cold. We'll see how it does with warmer weather. Solid 4 MPG under my Duramax in almost all conditions. Lucky to get 8 MPG when pulling my V-nose enclosed trailer @ 70 that only weighs 6K fully loaded. I felt good about it when diesel was $1.00 more. Now with it at $.55 more I don't feel as good. Still like the truck, just not crazy about the mileage or performance.