offset, confused
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offset, confused
This is one thing which really gets me confused. I put a set of ZR1 wheels by AFS on my 95, 17-9.5 front and 17-11 on rear but I am not sure what the offset is on these wheels, The rear sticks out a little so I put on flares. The front tires are wearing on the inside. Is the offset stamped on the wheel or can I measure the off set and what would be the ideal offset for this wheel size. Did a search but not specific on this issue. Thank you. Mike
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From: Everett WA
C4 of Year Finalist (appearance mods) 2019
Mike
9.5 X 17 is the standard wheel size for your 95. The proper offset (not back space) is 56mm.
You say the fronts are wearing on the inside. Do you mean the tread is wearing (alignment issue) or that the rubber on the sidewall is rubbing?
When you jack up the front of the car can you spin the wheel with your hands .... does it bind up anyplace in the rotation? Now turn the wheels all the way to the right or the left .... does the tire bind now?
What size tire are you running on the fronts?
On your stock 95 the 11" wide rear wheels will stick out a bit which is why (I believe) the GS model had those little flares on the rear fenders
Also see this thread: http://forums.corvetteforum.com/show...14&forum_id=34
9.5 X 17 is the standard wheel size for your 95. The proper offset (not back space) is 56mm.
You say the fronts are wearing on the inside. Do you mean the tread is wearing (alignment issue) or that the rubber on the sidewall is rubbing?
When you jack up the front of the car can you spin the wheel with your hands .... does it bind up anyplace in the rotation? Now turn the wheels all the way to the right or the left .... does the tire bind now?
What size tire are you running on the fronts?
On your stock 95 the 11" wide rear wheels will stick out a bit which is why (I believe) the GS model had those little flares on the rear fenders
Also see this thread: http://forums.corvetteforum.com/show...14&forum_id=34
Last edited by Mr. Peabody; Feb 23, 2006 at 07:22 PM.
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From: Lacey WA RVN 68-69
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The correct offset for 88-96 wheels is 56mm for the 17x.9.5" wide wheels. The 11x17 wheel that came on the 96 Grand Sport cars is 50mm. 11x17 wheels that came specifically on the 90-95 ZR-1's were 36mm.
The OEM wheels on your car, even though the front wheels may have been the 17x8.5" version, had a 56mm offset. The 50mm 11x17 wheels you got from AFS should fit fine and the fact that they stick out some is expected as the they are simply 1.5" wider.
Offset is the distance (typically expressed in millimeters) from the wheel mounting flange to the center of the wheel. Backspacing (typically expressed in inches) is the distance from the wheel mounting flange to the edge of rear of the wheel rim.
Your front tire wear on the inside is an alignment issue. Take the car to a reputable alignment shop and have a complete 4-wheel alignment done. This page from Vette Brakes has some good specs for street alignment: http://www.vbandp.com/instructions/h...ruct/align.htm I use the "Advanced Street" specs for autocross and track days and have not seen any excessive tire wear. Print the page and take it to the alignment shop.
The OEM wheels on your car, even though the front wheels may have been the 17x8.5" version, had a 56mm offset. The 50mm 11x17 wheels you got from AFS should fit fine and the fact that they stick out some is expected as the they are simply 1.5" wider.
Offset is the distance (typically expressed in millimeters) from the wheel mounting flange to the center of the wheel. Backspacing (typically expressed in inches) is the distance from the wheel mounting flange to the edge of rear of the wheel rim.
Your front tire wear on the inside is an alignment issue. Take the car to a reputable alignment shop and have a complete 4-wheel alignment done. This page from Vette Brakes has some good specs for street alignment: http://www.vbandp.com/instructions/h...ruct/align.htm I use the "Advanced Street" specs for autocross and track days and have not seen any excessive tire wear. Print the page and take it to the alignment shop.
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Great help, yes indeed the front is an alinement issue and will be addressed. Cannot wait to get back on the road, not a bad winter here in Worcester MA but still long. Great forum so much knowledge. Will have to upgrade the sumitomo HTRZ good value but forum members like the goodyear F1 GS go with these. Thank you mike.
