depends. If you put on 35" tires and your axles or brakes fail they could be denied but if your radio goes kaput or your top leaks they should be covered. If you put on a lift and your drive line craps out they can deny coverage but totally dependent on your dealer.Will adding a leveling kit/lift kit, new bumpers or even different size wheels and tires negate the warranty of your jeep?
I suppose if they wanted to they could say the larger tires caused the tranny to fail or put undue stress on the engine. Read these forums enough you read all kinds of things that seem stranger then fiction.all i plan to do is add a 2" leveling kit/lift, 33" tires and eventually different bumpers. so i assume any engine, transmission, electrical, leaks, etc. problems should be covered and that they can't void the entire warranty.