Burning through my rear tires!?

[vegistroker73L]

I had a set of General Grabber A/Ts put on nine months and probably about 15,000 miles ago and the rears are REALLY worn. The front tires have about twice the tread left as the rears. All four tires are at 80 psi and the truck is a 2003 F-350 SRW. I don't spin them up at all really because the truck is stock and they wouldn't light up unless I powerbraked anyway. Most of my driving is unloaded (commuting to work, etc...), and I'll usually only tow/haul heavy loads on the weekends. Should I put the rears up front since the front tires seem to be wearing much more slowly? Should I adjust the pressure in any of the tires at all? I'd love to get another 15,000 out of these!

[SmokeyWren]

Originally Posted by vegistroker73L

I had a set of General Grabber A/Ts put on nine months and probably about 15,000 miles ago and the rears are REALLY worn. The front tires have about twice the tread left as the rears.

Mine is the same way. BFGoodrich AllTerrain and Cooper Discoverer A/T tires lasted only 25,000 miles on the rear axle. The Michelin XPS Traction last about 40,000 miles. The XPS Ribs last about 50,000 miles. Same tires on the front axle last half again longer. That's opposite of my experience with my previous Ford 4x2 trucks with Twin I-Beam front suspension.

All four tires are at 80 psi and the truck is a 2003 F-350 SRW. ... Should I adjust the pressure in any of the tires at all?

Yes. Use a load/inflation table for your size tires and go by that, with maybe 10 PSI more than the table calls for.

When "unloaded" and grossing about 8,000 pounds, I run 50 in the front and 40 in the rear. When grossing 16,000 pounds with my 5er, I run 55 front and 65 rear.

All load/inflation tables published for use in the USA are identical for each size tire. The official table is published annually by the Tire and Rim Assn. (TRA). Various manufacturers publish parts of the TRA tables only for the tire sizes they sell. So if you have wierd size tires, you may not find your tire size in a load/inflation table if your tire manufacturer doesn't publish it.

Here are some load/inflation tables. Some of these probably include your size tires. The RMA table is a copy of the actual TRA tables.

https://www.rma.org/getfile.cfm?ID=606&type=publication = big file; scroll down the index to "load/inflation tables".

http://www.trucktires.com/firestone/...Truck_Tire.pdf = F-450 up, not pickups

http://www.goodyear.com/truck/pdf/da...dInflation.pdf = Big file, but includes most tire sizes that Goodyear makes for SuperDuty pickups.

Michelin North America RV Load & Inflation Tables = Michelin XPS tires only, but includes my LT235/85R16E.

Should I put the rears up front since the front tires seem to be wearing much more slowly?

All that will do is allow you to replace 4 tires at once. I'm not a believer in tire rotation, other than side to side. When the rears wear out, I replace those two. When the fronts wear out, I replace those two. They rarely wear out at the same time, so I buy only two tires at a time. Since my tires cost over $220 each, buying 4 of them at the same time would be a big chunk out of the ole beer budget!

[wawrd1]

I rotate and get 40,000 plus out of BFG A/Ts. Haul and tow heavy. Rotate,rotate,rotate!!!! And rebalance!!!!

[TTBadDog]

I think one of my son's has been driving your truck!! I put new tires on their X terra and they are gone at 15K. We do live on a twisty road and in a small town where they cannot go anywhere without me hearing who, what, where, when and how they were doing whatever. Who the L knows why.. All reports indicate they drive very slowly and never a report of speeding. Just they roads they run on. An X terra has not got the nuts to spin a wheel. I have wondered if the QC on tires is what it should be.