so a real quick question: what's the biggest size i can fit under a stock 4x4? the stock size is 215P75R15, the size its got on right now is 235P75R15. can i go any bigger? btw, i have the stock aluminum rims. can i go taller or wider or both? i really don't want any rubbing. i plan on going with BFG A/T's.
thanks,
rampagefan

 

It's covered in the faq at the top of the page.

 

right, but i have heard that the tire width cannot be more than 2" bigger than that of the rim width. so would a 30x9.5x15 be too big for the stock aluminum rim which is 6" wide, i think?

 

Width will be fine up to 12.5 on the 6in rim.

 

I've got 33x10.50s on my stock rims w/ a 4" lift. I have some rubbing against the frame at full turn, as well as some fender rub when I am turning and hitting a hard bump.

The 10.50s actually don't go out past the fender flare at all either, I was happy about that.

 

I have 31x10.50R15 BFG Mud Terrains on my truck, and its stock height and stock 6" rim. Fits great, no problems or complaints from me.

 

I had 31x10.5 destination m/t's on my dak never had a problem on the stock rim. on the 15 inch rim the true measurement is actually 30x9.5 on the 15 inch rim.