I got a set of z06 wheels. Fronts are 17 x 9.5 with about 7.25 or 7.5 inch backspacing and rears are 18 x 10.5 with 8 in BS. I'm planning to put them on my 91 camaro. Looks like ill need about 1.25 inch adaptors up front. Haven't tried the rears yet. Any thoughts?

tried the rears this afternoon and looks like probably 1.25" there, too. will also need a little "massaging" on the rear inner sheet metal to fit the 295s. who has these? or has input?

anyone?

ok, my friend had a 91 vert. he had OEM SS ten spokes from a camaro. 275 40/17's all around and we ran a 2 inch adapter on all four. no rubbing... im sure vette wheel will need same size unless you are using a 4th gen rear.. then you will need 1.25 i believe.. did u try search?

everything I read seemed to lead me to believe I would need 2" spacers but when I test fit the wheels, it looked more like 1-1/4" would be what I need. I'll have to make a few simple spacers to actually test it out, I guess.

2.0" front and 2.0" rear. You'll want to be close to 5.5" BS on fronts, 6.0" BS on rears with those wheel sizes.
295s are a bit too tall for the Camaro. 275 would be perfect.

I may be wrong but my understanding of tire sizes is that 295 is the section width in mm. The middle set of #s, 30 in my case iirc is the aspect ratio or percentage of the width that the sidewall is. So 295 is 11.614 inches wide. 30 aspect ratio says I would have 3.48'' side wall. Double that and add the 18" wheel says tires should be about 25" tall

You are correct, and I shall clarify.

I assumed you would use a 295/40/18, which is 27.3" tall with a 4.6" sidewall. Too tall, but good sidewall.

A 295/35/18 is 26.1" tall with a 4.1" sidewall. Good height and sidewall.

A 295/30/18 is 25.0" tall with a 3.5" sidewall. Too short in both height and sidewall.

Stock 245/50/16 tire is 25.7" tall with a 4.8" sidewall.

IMO, a 295/30/18 tire has a bit too short of a sidewall and will look funny in the large F-body wheel well.

sorry they are 295/35/18s. that figures to 4.065" sidewalls...26.13" tall. same height as the 235/60/15s on the car now. 60mm wider. almost 2&3/8" wider.

ok. atleast we're on the same page with that. that's the tires that came on the vette wheels I bought so that's what will atleast go on it to start.

You are on the right. track. Sorry if I confused you.
That setup would be fine as you said...

Me =

nah. you don't have to go that far! lol. thanks for the info on the adaptors.

i made some simple little spacers to slide over 3 of the studs and move the wheel out 1.25". thats not enough like I thought it would be. tie rod is holding the front part of the wheel a 1/16 or so off of the 1.25" spacer and the top of the wheel is hitting the strut, though it is even closer to being against the 1.25 spacer. i'm gonna try a little more, probably a 1/4" at a time. just seems like 2" will make the car look like a 4x4. we'll see as we go a 1/4" at a time. how much clearance should you have to the tie rod and the strut?