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Question ZR1 Tires & Rims

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Old 07-13-2015, 06:11 AM
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corvette marvin
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Default Question ZR1 Tires & Rims

Are the fenders on ZO6 the same size as ZR1, because I want put ZR1 tires and rims on my ZO6. Any clearance issues. I have opportunity to purchase A deal.
Old 07-13-2015, 02:49 PM
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Kent1999
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Same size all around. In fact the rear fenders are the exact same part number.
Old 07-13-2015, 07:28 PM
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EvanZR1
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GS/Z06/ZR1 all use the same size fenders and wheel offsets. You can use any GS/Z06/ZR1 wheel on a GS/ZR1. I'm not sure if you can use the smaller 18/19 GS/Z06 wheels on a ZR1 though due to brake rotor clearance.
Old 07-14-2015, 12:11 AM
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Dano523
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ZR1 used 1" larger rims front and back since it was needed for the larger carbon fiber rotors.

As for the tires, will notice that the ZR-1 front are 30, while the backs are 25's (Z06 runs 35/30), so ZR1 and Z06 tire OD are pretty close to being the same OD sizes.

Last edited by Dano523; 07-14-2015 at 11:55 PM.
Old 07-14-2015, 09:16 AM
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Originally Posted by Dano523
ZR1 used 1" larger rims front and back since it was needed for the larger carbon fiber rotors.

As for the tires, will notice that the ZR-1 front are 35, while the backs are 30's (Z06 runs 40/35), so ZR1 and Z06 tire OD are pretty close to being the same OD sizes.

So with the ZR-1 rims on your car, will just have larger gap between the rotors and inside rim barrel, and just lower profile tires instead (less side wall flex while corning, and being able to bend a rim faster due to such instead).
You're off on your aspect ratios:

GS/Z06 tires are:
275/35R18 front
325/30R19 rear
ZR1 tires are:
285/30R19 front
335/25R20 rear
Outer diameter is the same for GS/Z06/ZR1, which means there is not correction needed for speedo.

Yes, they are lower profile, but I don't ever recall a forum post of anyone bending a ZR1 wheel. I personally have had to drive over some pretty big potholes with mine and never had an issue.
Old 07-14-2015, 02:48 PM
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I am running 19x9.5 frt & 20x12 rear rims, can I use the ZR1 size tires without issue. Thanks
Old 07-14-2015, 03:04 PM
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EvanZR1
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Originally Posted by corvette marvin
I am running 19x9.5 frt & 20x12 rear rims, can I use the ZR1 size tires without issue. Thanks
Yes, you should always check the individual tire, but both Continental and Michelin show 9.5" as the minimum approved width for a 285 tire.
Old 07-14-2015, 03:14 PM
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Originally Posted by corvette marvin
I am running 19x9.5 frt & 20x12 rear rims, can I use the ZR1 size tires without issue. Thanks
Are your wheels the OEM offset as well? If so, you should be fine.

(you mention just size/diameter, so its unclear whether the wheels are OEM Zr1 wheels, or aftermarket)
Old 07-14-2015, 11:58 PM
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Evan70, thanks for the catch.

Somehow I was thinking base car and adding 19/20's with base offset rims to it.

On the base cars, 40/35's, and you switch to 35/30's when stepping up 1" larger rims to keep close to the same OD size of tires.

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