[Ant_ss]

Originally Posted by Iroc_Z28

Aspect ratio of a tire is the sidewall height of a tire... for example a 245-55/16 tire has a 55% aspect ratio(55% of the tire width)..... a 15% aspect ratio is very low profile, kumho offers a 385/15ZR22 tire

got it! thanks! it's people like you that make this forum the BEST.

[sonnydurden]

Those look like 20's in the picture!!

[fradaj]

Originally Posted by Iroc_Z28

Aspect ratio of a tire is the sidewall height of a tire... for example a 245-55/16 tire has a 55% aspect ratio(55% of the tire width)..... a 15% aspect ratio is very low profile, kumho offers a 385/15ZR22 tire

Just don't hit a pothole with a 15% profile tire.

[Synyster]

I'd bet a good sum that those are 19s. There's no way the 6th gen will have our tire height. They also look, tire/rim ratio wise, like the 5th gen with 20s. Thus, 19s... I could be wrong though, of course.

[All Star]

Originally Posted by SuperSound

But there is more sound deadening in the wheel wells on Caddys which could probably limit wheel size. The Camaro would not have that problem.

Cadillac engineers fought to limit the wheel sizing for performance reasons.

[mt3130]

I don't think that going to smaller wheels would be a bad thing. The only issue is that going to 19s leaves you with a very poor tire selection, and going to 18s would result in all hell breaking loose on this forum.

I personally don't care what size the wheels and tires are, as long as they "fit" the car well. By this, I mean no excess space, no wheels that are very small in relation to the tire, and a wheel style that is is appropriate for the styling of the car.