07 silverado tire question.

Whats the biggest tire I can put on a 2007 crew cab silverado 1500 without rubbing? and a 2'' leveling kit

anyone?

I´ll put 33x11.5 R 18 ( 285 / 65 R 18 )  BFG AT KO on 18" Eagle rims
on (my incoming) ´08 2500 HD.
Also with 2" levelling kit.
Dealer said it should work properly. Don´t know, will see
Truck, tires and rims are on the way from States to me to Germany.

Welcome to the forum!!! You got to give us some time to answer your questions. I don't the answer to your question, but someone here will, you just got to give them time.

Im not completely 100% sure, but the suggested size for aftermarket tires range from 30-31, when I spoke with my brother, whos a tech at a dealership he said you'll reach the limit on speedo and odometer reading before fitment.  Meaning, if you get a tire that BARELY clears everything, you will need to get an aftermarket programmer to bypass GM's max. tire size so the speedometer and odometer will work properly.

without doing anything you can generally go up two sizes.

buddy has an 07 and hes running 33 Dick Cepeks with no rubbing, but i dont know if id go any bigger

I have an 01 w/ a 4" suspension lift - my tires are 33's and have good clearance but without the lift would be to big, not sure if the 2" leveling kit would get you there?
If you go to bf goodrich or goodyears site there are chart with diameters of all the tire sizes.  I would put the leveling kit in then do some measuring, just keep in mind when you turn your wheels in the front- that is where it will be tightest.

Hey ChevyGuy31189,  what brand of spacers did you get? I have been looking for a good brand and i was curious about the install, type of product and how well it is working for you?  Is yours the new body style?

Get a 6 inch suspension lift and you will have loads of options plus it will look great