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View Full Version : Help!.....Oversize tires, correct pressures



Billy14
12-21-2003, 10:40
I hope there's someone here that REALLY has the right answer.
Got into a pi$$ing contest last night with a guy debating tire pressure on a pickup. He claims you should always run same pressure ff & rr. I disagree given engine weight and light bed, unless towing.

I run BFG 295's with the front at 55psi & the rear at 45psi. I get good even wear, smooth ride, and the truck handles like a car. If I pump the rear up to 55-60 the truck bounces around and will shake your teeth out. The rears don't even make full contact with the ground across the tread width with over 50psi. I also have a 97 Tahoe with BFG 285's and run 50 ff & 40 rr. Got 78,000 on the first set.

I looked at the door sticker on my truck for a quick answer and was blown away. Chevy says 55 ff and 80 rr with the stock 245's. Don't understand unless the added weight on the front would generate more heat when warm therefore, lower cold pressure to start.

Hope someone has the right answer,

Billy

WhiteDuramax
12-21-2003, 12:03
Factory pressures are good up to full weight carrying capicity. You dont need to run that high of pressure unless you are towing. I run mine the same all the way around just cause its easy. Its all personal preference really.

SoMnDMAX
12-21-2003, 15:11
My 285's run 55 front, 45 rear under normal conditions. With the trailer on, the rears get bumped to 60 PSI. With this setup the tires wear evenly with full contact patches.

The factory 55/80 for the 245's is the pressures you should run at MAX gross vehicle weight, I.E., towing, hauling a full load in the box, etc.

Billy14
12-21-2003, 15:19
Thanks guys!

Billy