18x10.5 +54

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Oct 2, 2022 | 05:53 PM

2002 C5

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Racer

Joined: May 2019

Posts: 316

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From: Michigan

18x10.5 +54

This is for the REAR of the car.

How wide of a tire can I fit with these rims without rubbing or modifications? I have 285-35/18 Michelin PS4s currently, I am losing traction here and there and the active handling keeps coming on. The temperature outside today was 65*. This is just on regular "spirited" street runs.

Because they do not make anything in the 305 or bigger in this tire, I am thinking or going with the 305 or 315 R88R's in the rear.

Currently the motor is stock, but, I have a LS3 that I built and will be putting it in this late fall/winter. That motor will be over 500+hp, the current tires don't stand a chance of I'm spinning now.

I do track the car a few times a year as well.

Thoughts?

Last edited by 2002 C5; Oct 3, 2022 at 05:23 AM.

Oct 2, 2022 | 07:56 PM

Elektro

Pro

Joined: Jun 2022

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From: NW OH

10.5 is the minimum width for that tire, so it will fit "officially", e.g., without stretching or pinching.

Oct 2, 2022 | 08:11 PM

2002 C5

Thread Starter

Racer

Joined: May 2019

Posts: 316

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From: Michigan

Agreed, I am asking about the offset and rubbing or the sort. Thank you for replying though. If anyone is rubbing this set up, pictures would be great!

Oct 2, 2022 | 11:13 PM

Elektro

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From: NW OH

I think it will rub at full lock. This is the same size tire, yours will be pushed out 3 mm more (+57, but on 11" wheel)

I don't have experience but I just ordered wheel and tire so the research is fresh.

Oct 3, 2022 | 05:26 AM

2002 C5

Thread Starter

Racer

Joined: May 2019

Posts: 316

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From: Michigan

I apologize, I am asking about the rears. The front tires I am staying with the current size. Thanks.

Oct 3, 2022 | 07:51 AM

Kubs

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It will fit fine. No issues.

Oct 3, 2022 | 07:53 AM

2002 C5

Thread Starter

Racer

Joined: May 2019

Posts: 316

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From: Michigan

Quote:

Originally Posted by Kubs

It will fit fine. No issues.

What will? Are you referring to the 315?

Oct 3, 2022 | 07:55 AM

Kubs

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From: Akron Ohio

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Quote:

Originally Posted by 2002 C5

What will? Are you referring to the 315?

The wheels you are asking about.

Personally the 315 is too wide for a 10.5" wheel and doesnt look right to me. It will physically fit on the wheel though, and not cause any issues.

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Oct 3, 2022 | 08:04 AM

2002 C5

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Racer

Joined: May 2019

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From: Michigan

I agree, I was just trying to get a more direct answer. So, with the rim size, offset and tire size, how do you know it will fit? Thanks.

Oct 3, 2022 | 09:06 AM

#10

Kubs

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From: Akron Ohio

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Quote:

Originally Posted by 2002 C5

I agree, I was just trying to get a more direct answer. So, with the rim size, offset and tire size, how do you know it will fit? Thanks.

Because its been done a million times. Those are only a 3mm difference in offset from the OE rear Z06 wheels. Almost anyone who tracks a C5 runs rear Z06 wheels with 315s. I run 18x12.5 wheels with 315s without issue, so I can say with confidence that the smaller wheel will also not have issues.

Oct 3, 2022 | 09:10 AM

#11

2002 C5

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Racer

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From: Michigan

I feel warm and fuzzy now. You have not only facts, but first hand knowledge to support your answer. No B.S., thank you. I hope this will help someone in the future as well.

Oct 6, 2022 | 10:40 AM

#12

grinder11

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Quote:

Originally Posted by 2002 C5

I feel warm and fuzzy now. You have not only facts, but first hand knowledge to support your answer. No B.S., thank you. I hope this will help someone in the future as well.

About 17 years ago, I bought a set of re-pop thin spokes in an 18x10.5 from Bob@House of Wheels. Did this to keep stock look, and so I could run a 315/30/18 tire, Michelin PS2s. I don't have the biggest hands, but I could get all my fingers between the sidewall and inner fender-barely. They've never rubbed. Hope this helps........