Wheel Size Question

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Dec 31, 2009 | 07:49 PM

Lethal Tendencies

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Joined: 12-26-2009

Posts: 819

From: Hebron, Ill.

Wheel Size Question

If I go from 16 to 18" wheels will it effect the speedometer?

Jan 1, 2010 | 12:29 AM

IgottaWoody

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Joined: 01-13-2008

Posts: 4,708

From: Washington State, where it rains

Just keep the overall diameter of the tire the same and no problem.....

Jan 1, 2010 | 10:58 PM

prod

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Joined: 12-14-2007

Posts: 2,964

From: Toronto ON Canada

Going to 18" I would get tires that are 235/40/18, just a hair bigger than stock. The wheels should be 5x110 bolt pattern, 7.5"-8" wide, with an offset close to 42mm.

Jan 2, 2010 | 01:01 AM

txbass06

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Joined: 04-26-2009

Posts: 1,222

From: NE Texas

I went from the stock 16" LS wheels to a set of 18" Cobalt SS/SC wheels with the 235/40's. With my speedometer showing 60, I'm actually doing 60.2

Jan 2, 2010 | 01:51 AM

sleeper

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Joined: 01-09-2007

Posts: 16,081

From: SE USA

Quote:

Originally Posted by txbass06

I went from the stock 16" LS wheels to a set of 18" Cobalt SS/SC wheels with the 235/40's. With my speedometer showing 60, I'm actually doing 60.2

I wanna bump too. but just to 225/50/17.....Any bigger I'd need wider rims.

Jan 2, 2010 | 09:54 AM

Lethal Tendencies

Thread Starter

Senior Member

Joined: 12-26-2009

Posts: 819

From: Hebron, Ill.

Quote:

Originally Posted by txbass06

I went from the stock 16" LS wheels to a set of 18" Cobalt SS/SC wheels with the 235/40's. With my speedometer showing 60, I'm actually doing 60.2

Thats exactly the swap I was thinking of doing.Thanks for the info.

Jan 2, 2010 | 10:02 AM

Lethal Tendencies

Thread Starter

Senior Member

Joined: 12-26-2009

Posts: 819

From: Hebron, Ill.

Would a 225/50/18 work?

Feb 16, 2010 | 12:46 AM

sleeper

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Joined: 01-09-2007

Posts: 16,081

From: SE USA

Try using this tire size comparison link.. It even tells you what the MPH would be diff from stock tires...

http://www.discounttire.com/dtcs/infoTireMath.dos