Hello all, first time poster, long time lurker


Today i finally took the plunge and ordered my summit white 2010 Sierra ext cab 4x4. Now i'm looking to stick a little bit bigger tires on the truck with possibly a leveling kit. Anyone have any idea how tall of tires i could stick on this truck without leveling? would be hoping for 33's. Would a leveling kit OR bigger tires void my warrenty?

Thanks in advance!!

-Justin