LT Load Range 'E' Tires
 

Hello all,

My daily driver Jeep pickup is in need of a replacement set of summer tires; presently I am running oversized P245/70/16 Toyo Open Country with a max pressure of 35. I am considering moving to a LT Load Range 'E' tire as they can be aired up to about 90 psi in an attempt to reduce rolling resistance, increase fuel economy, etc.

I realize that tires aired that high will be super stiff and affect driveabilty and handling, but my truck is rarely driven over 55 as a commuter a few days a week... maybe once or twice a summer it will actually haul heavy or large items [winter has a fiberglass topper +3 60# sandbags].

Any thoughts on the E tires? I am still a little new at the entire fuel economy game but am eager to learn.

Thanks!

Remember that 6-ply light truck tires are 80 psi max sidewall. That might be what you are looking for. 4-ply are backed down closer to 50 psi max sidewall. I run 50 psi in the Toyota Tundra with no problems.

I'm not sure what you are trying to say here, but I think it is incorrect.

The typical construction for a tire is 2 sidewall plies - typically polyester - and 2 steel belts in the tread area. This applies to passenger car tires, and LT tires, regardless of the Load Range (Ply Rating).

EXCEPTIONS:

Small passenger car tires don't need 2 plies, so you will frequently find those with a single body ply.

High speed rated tires generally have cap plies (nylon) over top of the steel belts - sometimes 1 ply, sometimes 2

Sometimes even lower speed rated tires will have cap plies - as cap plies really reinforce the tire and delay tread separations from appearing.

Sometimes LT tires will have cap plies - also for reinforcement and delay of tread separations.

I hope that clears things up.

I have LT E rated truck tires on my XJ Cherokee. There doesn't seem to be much rolling resistance change above 40PSI. They are also much heavier than a P-rated car tire.

What I noticed playing with pressures: Anything above 40 and wheel bearing life can be measured in months.

60PSI and above: The jeep will actually bounce off of the road when you hit bumps. Good shocks or not.

I do like having E rated truck tires for going off road. Less likely to put something through the side wall. And they seem to wear like iron.

I run 32x10.10x16" Mickey Thompson MTZ mud tires, E range. I run them at 44psi on road and 15 off-road. 'll be honest, I'm not looking to improve FE on the Jeep. It's a lifted, 5.9L ... JEEP lol. They rock though. Great off-road and good on-road.

Load range E tires are heavy and expensive. I wouldnt bother.

Great, thanks for the feedback. I don't think bouncing off the road sounds like too much fun and will keep it at less than 50.