jcsperson

I'm considering a set of wheels that are 18x12 in front and 18x13 rear.

What is the widest I could go on tires for a stock C5 coupe with no rubbing? I've researched some older threads, but there didn't seem to be any concensus on what would really fit.

I was thinking 285/30/18 front and 335/30/18 rear.

I currently have 275/35/19 front and and 295/35/19 rear.

Thanks.

goodguys282

Try this site. It helped me chose the right size tires for my setup.
http://www.rimsntires.com/specs.jsp

James2002z06

I don't think you can go with a 13 on the I have
12s on mine now ,from the wheel well to the inside
If the tire there might be a 1/4 inch

SVTBAIT

If you want a real answer:

Offset is more of a determinant of rubbing than width.

If you want a helpful answer:

1) A 285 tire on a 12" wheels is bad news. a 285 tire is more suited to a 10" wheel. 12" wheels should have roughly a 335.

2) If you want your wheels flush to the fenders (or close to it), those widths will not work.

3) running a 12" on the front (possible or not), doesn't make much sense from a performance standpoint.

If you are set on running an 18/18 setup, I'd suggest something along these lines:

Front:
18x10
285/35/18

Rear:
18x11
305/35/18

If you don't mind the rears poking out a little, you could go with a 325 or 335.

James2002z06

Onething is sure and that is this question is almost
Asked on here weekly ... The answer that you just
Provided us the best

jcsperson

That was very helpful.

I responded to an ad and I haven't seen the wheels yet, but I'm pretty sure these are three-piece wheels so I can get two of them narrowed down.

z0stix

I run 275/35/18 on a 18x9.5 front, and a 335/30/19 on a 19x11 out back, had to do trim the brake ducts(z06)

Amixamse

So a 325 will actually fit though?

jdmvette

a 13" wide wheel always makes the tire look stretched IMO. even big 345s.

i recommend a 12" wide wheel to go along with the 345s so that the tire protrudes beyond the wheel not the other way around.



13" wheel w/345s. Look at the tire sidewall vs the wheel edge:





12" wheel w/345s. Look at the tire sidewall vs the wheel edge:

SVTBAIT

Yes, but it will poke out past the fender. Depends on whether or not that bothers you.

AU N EGL

18x13 with 18x335/35 rear will need longer studs, a 5/8" spacer and flairs to cover the tires.

that is what I run

18x12 & 18x305/30 fronts and 18x13s & 18x335/30 rear on left
18x10 & 18x275/35 and 18x12 18x335/35 rear on right



3/4" flair



good reference

my track car left and our street vert

SVTBAIT

I don't necessarily agree with this.

An 18x13 with the improper offset and backspacing will need longer studs, and a spacer.

What fares are those? They're nice.

AU N EGL

for strength they will. changing the wheel offset will help, but again flairs will be needed to cover the tires.

ACP World Challenge flairs

Advance Composite Products aka Corvette Race bodies.

jcsperson

What kind of camber are you running there, Tom?

AU N EGL

What ever gave you that idea?



Front

-3.0*



rear

-2.0*



Slot car on rails through corners and even tire wear.

but on public streets, T1 suspension, aluminum seat bolted to the floor, big wide arz tires, Rocks would be softer.