i want to put some bigger tires and rims on my 2007.5 Sierra crew cab short bed since the stock tires look tiny. i noticed others have put larger tires on without a lift kit at all. what would i need to be cutting or adjusting to accomidate larger tires? how much cutting would i need to do?

i'm looking to put on 18" rims and 305 tires with the rim offset to a minimum

any advise would be appreciated

sorry...new to forum, new to site. i need to do a little research before i ask questions that a lot of people already have asked...

Check out the tires and wheels section.

I have 17 stock tires and they rub the liner already, on a turn. I am waiting for Helm to get there act in gear and the manual to come out to cheak the ride height.

Yessir, that's correct no lift or leveling kit necessary if you dont mind cutting a small piece of sheet metal (smaller than a stick of gum). All I did was crank the torsion bars a few turns. Trimed some of the inner-plastic lining. The metal part is in the rear inner fener. without that cut you'll get a pretty nice rub that you and everyone outside can hear. Take a sawzall and file it down at the MOST an inch. Here's the thing, they sell leveling kits for $500-800 bucks. These things were designed to clear 33's without putting stress on. Most of the the time guys here are still needing to crank the torsion bars a little to keep from rubbing. The difference is I have to turn mine JUST one more time than them and I didn't have to spend that kinda money. Will cranking the torsion bars effect the ride, YES a little. Will u get use to it after a couple of days, YES. I've driven a duramax LMM with a leveling kit that had t-bars turned 2 times and there was no difference in ride. Heck, these are 3/4-1 ton diesel trucks they will never ride like a cadillac. Get you some Cognito idler-arm supports ($200 bucks) and crank your bars a few turns and you're good to go. The idler-arm supports are only necessary if you are running heavy loads and/or doing a lot off-road driving. Here is the picture of my cut. Keep in mind that actual metal cut, was very minimal. The plastic is what was cut the most.