Front Wheel Offset Question?

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Jul 20, 2012 | 01:55 PM

Chriscam21

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Racer

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From: Fresno CA

Front Wheel Offset Question?

I need to know what the proper offset is for an 18 x 9.5 on the front of a C5. I want to keep the wheel flush or inside the body. Thanks in advance for your help.

Jul 20, 2012 | 02:10 PM

SEAICE

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From: Seattle WA

Quote:

Originally Posted by Chriscam21

I need to know what the proper offset is for an 18 x 9.5 on the front of a C5. I want to keep the wheel flush or inside the body. Thanks in advance for your help.

Offset should be 59mm. I have 265/35/18s on this size wheel. The lip is 1.5"

Last edited by SEAICE; Jul 23, 2012 at 03:23 PM.

Jul 20, 2012 | 02:13 PM

MSG C5

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Quote:

Originally Posted by SEAICE

Offset should be 59mm. I have 235/65/18s on this size wheel. The lip is 1.5"

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Jul 20, 2012 | 02:20 PM

Chriscam21

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From: Fresno CA

Can anyone else confirm (front)?

Jul 20, 2012 | 02:24 PM

MSG C5

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I think size and offset are different. I think offset is determined by the make of the wheel you are considering so a CCW wheel has a different offset than an Ace Slick wheel or a stock Z06 wheel.

If I'm wrong, I'm sure someone will correct me.

Last edited by MSG C5; Jul 20, 2012 at 02:39 PM.

Jul 20, 2012 | 02:38 PM

Scooter70

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From: The Motor City

The Z06 front wheel is 9.5" wide and has an offset of +54mm. More offset than that will push the edge of the wheel out, less will pull it in.

Jul 20, 2012 | 02:42 PM

Russ K

Burning Brakes

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From: Regina Sask

I have 18x9.5 59mm offset front wheels with 265/35/18 tires. Rear wheels are 19x11 65mm offset with 305/30/19 tires.

Russ Kemp

Jul 20, 2012 | 02:45 PM

Russ K

Burning Brakes

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From: Regina Sask

Quote:

Originally Posted by Scooter70

The Z06 front wheel is 9.5" wide and has an offset of +54mm. More offset than that will push the edge of the wheel out, less will pull it in.

You got it backwards, more +offset brings the wheel in, not out.

Russ Kemp

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Jul 20, 2012 | 02:50 PM

Russ K

Burning Brakes

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From: Regina Sask

Quote:

Originally Posted by MSG C5

Did you read this thread? http://forums.corvetteforum.com/c5-g...el-owners.html

Seems no one knows the offsets of a CCW wheel, regardless they do stick out due to being too wide & wrong offsets.

Russ Kemp

Jul 23, 2012 | 03:21 PM

#10

SEAICE

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From: Seattle WA

Quote:

Originally Posted by Chriscam21

Can anyone else confirm (front)?

Go to Tire Rack, put in your vehicle & shop for wheels. They will list the offset for the verious width wheels you choose.

By the way, I'm apparently Dyslexic... I have 265/35/18 tires on my 18X9.5 (59mm) front wheels, not 235/65/18s!

Jul 23, 2012 | 04:09 PM

#11

c5vetteguy

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From: SW Nuh Hampsha

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I have the 18x9.5" magnesiums in front (and rear). Their offset is 65mm. Tires are 275/35-18 in front, with no issues.

Jul 23, 2012 | 04:14 PM

#12

Russ K

Burning Brakes

Joined: Jul 2006

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From: Regina Sask

Quote:

Originally Posted by SEAICE

Be carefull, as the Tire Rack has a lot of wrong wheel info! My rear wheels are 65mm offset, but a C5 ZO6 calls for a 53mm offset. Had to look up a C5 coupe/vert rear wheel. Yet they insisted that a 53mm offset rear wheel was right for my car. That would of stuck out 1/2"

Russ Kemp

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