correct fittment

Need the correct sizes for 9.5 rims for z06 17 front and 18 rear. Looking to keep stock height. Email me with any pics you may have of yours. waite1of4@yahoo.com

What year car? What tires were on your car originally? It would help if you had a "signature" with basic info about the car - year, model, engine, tranny and any major mods.

There were 4 different tire sizes used on the 4th Gens (assuming that's what you have):

215/60-16 = 26.2"
235/55-16 = 26.2"
245/50-16 = 25.7"
275/40-17 = 25.7"

My car was a 16 inch wheel 93 z car. Currently has 275-40-17 all the way My main concern is the 18s. Have no clue on that signature thing and how to do that.
Thanks
Kris

An 18x9.5" wheel can run:

275/35-18 = 25.6"
285/35-18 = 25.9
295/35-18 = 26.1 (technically, this tire needs at least a 10.0" wide wheel)

The stock tires on the Z were 235/55-16. You only got the 245/50-16 tires if you opted for the Z-rated tires (RPO QLC). Check the sticker on your door.... it should show the original tire size.

Yes I had the up option z rated code. does anyone with the .1 shorter tire notice a diffrence in looks?

The difference is split over the two sidewalls, so you are talking about a 1/20th of an inch difference - very hard to see. Also, each manufacturer sets his own dimensions. Those are typical of many manufacturers, but not all. The "nominal" diameter can vary +/- 0.10" from one manufacturer to another, or even within the different tire models from the same manufacturer.

Thanks allot, this eally helped, I believe I will go with the .1 shorter, and just look thru tire rack and find the ones that are about the same exact.
Appreciate all the help.
Kris