I'm Justin, I live in Vancouver WA. I have an '07 (new body) 1500, 5.3 crew cab LTZ Silverado. It has a 6" Fabtech lift, bedliner, intake, throttle body spacer, dual Magnaflow 3" exhaust, kicker solobaric under the back seat and I just got rid of the 33's and had 35X12.50X17 Nitto Mud Grapplers installed last week. I'm kinda curious about the speedo difference now, the 33's were about on the money, but I'm noticing that I'm going a bit faster then it says, prob about 5 MPH at around 55-60. For anyone with questions about how the tires clear. I had to trim the front inner fender liners on the front of the wheel wells (about 4 inches on both sides) or the tires rub when turning hard. But it's just plastic so it wasn't hard to do. Anyone and everyone feel free to ask me anything. I'm a mechanic by trade. I have a '66 C-10 in my garage and I have worked on cars, semi's and my specialty is helicopters. So Chevy's are a walk in the park!