99 Sierra Z71.. 3" body, 2.5" front level kit, and 1.5" blocks to go on the rear.

Can I fit 315s or only 305s? (16" rim). I saw a guy fit 315s, but I dont know if he had to trim fenders or not.. I don't want to do that. I can probably crank a little more out of those torsion keys, just not sure how much.

 

a 315 will be close. if you dont want to trim anything i would just stick with 305s

 

315 might rub. Will be real close. I have a 6" lift and i had 315/75/16 and i didnt have any problems.If they rub it will be when you turn the tire to full lock.

 

Mwalls your just to fast. Beat me to the punch line!!!

 

go with 35's or 36's

 

What!? 36" Tires wont fit.

 

ok, probably not the 36's but the 35's or 33's will defenitaly be a good fit for that lift.

 

If you throw a 3" body you will be able to clear a 33.12.50. If you want to go 315 or 35x12.50 you are better off with a 6" suspension lift. The suspension componentes will last much longer, than installing torsion keys, wich place a lot of stress on the front end of a vehicle, not to mention it kinda scews the smooth drive of the vehicle. When you mess with torsion bar lifts (aka leveling kits) you basically going with a cheap temporary type solution. When you look at the big picture you will end up spending more money now by buying a 6" lift, but in the long run it will balance out with ball joint replacemnt alignments, etc...

 

305/70/16 should be fine

 

ya i dont know what i was thinkin about the 36's for some reason i thought the post said 6'' lift, but ya i think 33's will do it!