DMAX AND TIRE SIZE!

[REDTRUCK05]

Is GM the only one that says NO to bigger tire size? Why?

[Kennedy]

My "guess" is that emissions certification, transmission adaptive shift, and shift point programming all factor into this. The 3500 SRW trucks like my 2005 have 265's stock though...

[Cooperrw]

The dealership in town installs lift kits and larger tires as well as the Hypertech chip, they better not try and deny any warrenty claim I may make! :cool:

[jbplock]

Moved to the 2500HD/3500HD Trucks & Drivetrain forum ...

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[GaDixie]

It all depends on the dealer. My local ones also install lift kits and actually sell brand-new trucks that they have lifted off the lot. So, just find a decent dealer and you'll be all right with getting rid of those dinky stock tires.

[klintdog]

I've got the 265/75 R16's on my truck right now. I'm looking at getting some new tires and was wondering how big I can go on the stock rims without running into rubbing issues. Can I go up to a 285, or am I going to hit problems?

[Laynhose7]

Im running BFG All Terrains 305-70-R16 on a 2005 GMC D-Max I had to trim the front air dam a little but I put some touch up paint on it and you cant tell its been done. I also adjusted the torsion bars a little to raise the front to match the rear. The chevy would have to trim the bottom plastic piece to make 305s work. I believe that 285s by Goodyear will fit without rubbing with a little lift from the torsion bars. Im not sure about the BFGs.

[klintdog]

I'm looking at putting 285 Yokohama's on it. The shop suggested raising the torsion bars a bit to make these fit. How much do you normally have to raise this, and is it noticeable? If I could see a pic or two before hand, it would make this an easier decision.

[Laynhose7]

You would probably have to give 5 or 6 turns on the torsion bars and then I would get the front end aligned just to be safe. It is a diffrence because the front end is the same highth as the rear. I think it looks a little better.

[More Power]

The trade-off(s) when raising the front by adjusting the torsion bar adjusters include: a somewhat harsher ride quality, shorter ball joint & CV joint life, and you might need to crank the bars again at some point in the future to maintain ride height.

Getting a front-end alignment (especially tow-in/tow-out) is a good idea for the ride height you select.

Jim