Pics of 315/30/18 on the Front?

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10-21-2016, 09:00 PM

#21

C6WNC

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Quote:

Originally Posted by CaddyRacer

NICE
which rims?
which tires?

CCW / C14's

Running
Hoosiers

Just finished putting them on the car, and will load on the trailer in the morning. Heading to VIR with Chin Motorsports for two days. Weather look AWESOME!!

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10-31-2016, 05:10 PM

#22

AtomicZ

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05-19-2018, 08:25 PM

#23

juicedz06

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Quote:

Originally Posted by Bill Dearborn

I think they would work better on an 11 inch wheel. The hot setup on a C6Z is 18x11 front wheels with 18x13 rear wheels running 315/30 fronts and 345/35 rears. Tire diameters are close to stock so TC and Engine Drag Control don't get upset.

I don't have any pictures with the CCW wheels on my C6Z but they did fit well with the car.

Bill

hey bill, wouldn't a 325/35-18 be closer in size at 27"? the 315/30-18 comes in at 25.4

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05-19-2018, 08:27 PM

#24

juicedz06

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Quote:

Originally Posted by C6WNC

18x11 running 315's on the front. 18x13 345's on rear

any abs/traction control issues at those sizes?

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05-19-2018, 11:59 PM

#25

Bill Dearborn

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Quote:

Originally Posted by Zr1lsx

hey bill, wouldn't a 325/35-18 be closer in size at 27"? the 315/30-18 comes in at 25.4

They are talking about a different set of tires. When comparing tires the stock front C6Z tire diameter is 25.6 while the Hoosier 315/30/18 is 25.6. The stock rear C6Z tire diameter is 26.7 while the Hoosier 345/35/18 is 26.8. That shows the track configuration is almost identical to the stock including the rear/front ratio of 1.04. The variance in the ratio is just 0.004 which is effectively zero. That is why that setup was so hot on the C6Z. You got a lot of front and rear rubber on the road while keeping the ratio the same. That sure helped when running through a corner at speed or powering out of a corner. You drove the car into a corner and it stuck and it stuck powering out of the corner. When you hit the brake you have stopping power due to the amount of rubber on the road. The same setup works like a champ on the C7Z since the ratios are so similar.

The only reason why I switched away from the 18x13 rim to an 18x12 rim in the rear is because used Pirelli tires with one or two heat cycles on them are easier to get than used Hoosiers.

Bill