i have a 2008 dodge ram 1500 sxt but i have a 6" pro comp lift in it. i was wondering what the biggest tire i can go with on a 17" rim.

 

6" lift??? I would think atleast a 38x12.5

 

max isnt height its width, and 12.5 is pushing it on a 9.5 rim, but for gearing and rubbing sake ide go 35"x12.5

 

i would go 37s or maybe 38's, if 35s can fit with just a level and a lil bit or rub u can clear those tire sizes easy as long as ur rims have the right backspacing....my tire is 12.1" wide on a 8" wide rim and have been in some ruts and deep holes in the mountians with no problems, but its better to go with a wider rim like 9'-10" width...

 

yeah you can put wide tires on skinny rims they wont explode or anything they just wear in the center instead of evenly,

 

its all about tire pressure

 

back spacing and tire width is everything. I have 20" rockstars with 35x12.50 nitto trail grapplers with my 6" BDS lift and i rubbed when trying to turn all the way. We had to trim up the inside of the fender liners and unless i hit a rut or bump really hard i clear fine now.