Help!! Rim offset question

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Mar 20, 2010 | 08:30 PM

Voice123

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Instructor

Joined: May 2007

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From: Ottawa Ontario

Help!! Rim offset question

I just purchased new American Racing Torque IIs. These were 17 x 7 with 4 inch backspace. However the offset they sent me is 1 mm on these rims. Should I be concerned?

Mar 20, 2010 | 08:57 PM

Voice123

Thread Starter

Instructor

Joined: May 2007

Posts: 154

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From: Ottawa Ontario

I think offset is different from backspace.....

Mar 20, 2010 | 09:37 PM

Voice123

Thread Starter

Instructor

Joined: May 2007

Posts: 154

Likes: 0

From: Ottawa Ontario

Anyone??? I need to know if I need to return these back so your expertise would be appreciated.

Mar 20, 2010 | 09:56 PM

MiguelsC2

Le Mans Master

Joined: Aug 2009

Posts: 5,474

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From: Houston Texas

St. Jude Donor '10-'12-'13

Quote:

Originally Posted by Voice123

I think offset is different from backspace.....

Your correct. I was watching the mecum auction and just skimmed over it. I should have paid more attention.

Being Saturday evening, I am sure you will get many responses by tomorrow.

Mar 20, 2010 | 09:58 PM

claysmoker

Race Director

Joined: Dec 2004

Posts: 10,332

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From: PARADISE

St. Jude Donor '09-'11-'12-'13-'14

If the offset is truly 1mm I wouldn't worry about it, but are you sure about this measurement?

Try this linky for more info; https://www.rsracing.com/tech-wheel.html#backspace

Mar 21, 2010 | 12:09 AM

itsonlyairandfuel

Melting Slicks

Joined: Jun 2001

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I think the 17x7 is a 4" backspace standard wheel. Which would be about zero offset, a 7" rim is about 8" flange to flange. That rim will work but depending on tire size will need the fender lip clearanced. A 225/50/17 will probably rub with stock fenders. This size rim is a better option, http://forums.corvetteforum.com/c1-a...17-wheels.html. Ron B.

Mar 21, 2010 | 11:19 AM

Kensmith

Le Mans Master

Joined: Mar 2005

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From: Rocklin California

I have 17X8 with 4 1/2" backspace and 225/50 tires. No problems with front or rear clearances. Very close at rear though. 17X7 with 4" backspacing will be fine. I'd be more concerned about the tire width but the 4" backspacing on a 7" wheel will give equal clearance at both rear wheel opening and trailing arm. I would not go any wider than a 9" wide tire. 225/50 is 9.1 to 9.2 inches wide and will be very close.