[cblack]

If I get some 19s wit a 245/45/19 will they rub? The place that I'm gettin the rims said 40s are the biggest u can get without rubbing.and I thinkin ya right lol.can anyone help me out thanks

 

[tygriff]

Your speedo will be out with that tire size (overall tire diameter will be larger than stock). As for rubbing, many members are running 245's on 20" rims without rubbing, so you shouldn't have any issues. Try to keep your rim offset under 40mm.

 

[Silver LTZ]

I agree with tygriff. I have been running 245/35/20's for 15,000 miles with no issues. I don't know what your tire guy means buy "40's are the biggest you can get without rubbing". That makes no sense. The aspect ratio wouldn't be the issue, the section width would. I'd find a new tire guy.

 

[cblack]

Ok coo.right on guys.hey what can I all do with out voiding my warrnty.can I lower it
And put exhaust on it.I herd that doesnt ,u guys no.thanks

 

[Silver LTZ]

Ok coo.right on guys.hey what can I all do with out voiding my warrnty.can I lower it
And put exhaust on it.I herd that doesnt ,u guys no.thanks

It shouldn't, but really depends on your dealership.

 

[tygriff]

As Silver noted, it really depends on the dealer you work with. In reality, if you lower and a bushing goes or something in the suspension, a dealer could state that the lowering caused the issue and thus no warranty coverage. Similarly for the muffler (ie: your cat goes - blame it on you changing the muffler).
For me, I have bought 3 cars from the same dealer and salesman and I do all warranty work through them. They treat me nice and never made an issue of aftermarket add-ons with my previous cars.