NTMD8R

I am thinking of going with 200 treadwear tires for my 2008 Z06,
for Autocross in class AS. Stock wheels are 9.5x18 front, 12x19 rear.

I would like BFG Rivals, but they only come in 18" diameter.
Of course, the wider the better, so I am thinking of 345/30/18 for he rear, and 275/35/18 front.

So, to get them on the rear, what wheel size do I need ?

PK Auto Design

You have options brotha

Forgestar CF5 or F14 18x13
BC Forged Wheels 18x13
Forgeline Wheels 18x12 or 18x13
HRE Wheels 18x12 or 18x13

winstonc

CCW has several options.

http://www.ccwheel.com/

PK Auto Design

CCW is a solid brand currently turn around is 12 weeks depending on the wheel

toy4speed

Keep in mind that SCCA A-Street limits wheel size changes and only up to 7mm of offset variance. You can use a 18x12 rear wheel, at stock offset or +/- 7mm from stock. I hear many folks are running the 335/30-18 Rival-S in the rears.

PK Auto Design

The Rival S is a very solid tire choice.

c5racr1

Does forge star make f14 18x11and 18x13 for a c6 zr1 with carbon brakes?


QUOTE=PK Auto Design;1595424352]You have options brotha

Forgestar CF5 or F14 18x13
BC Forged Wheels 18x13
Forgeline Wheels 18x12 or 18x13
HRE Wheels 18x12 or 18x13[/QUOTE]