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Perfect wheel setup

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Old Feb 19, 2025 | 01:26 AM
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Default Perfect wheel setup

I have a C5 convertible Corvette 2000 and was wondering would I be able to put 19 inch rims on the front and 20 on the back and remain at the same current height as I am now I’d like to run Michelin pilot sport fours because they’re currently not available on the stock size rim But I don’t want the car to be any lower nor do I want any more fender well between the tire and the fender. Hopefully you guys can point me in the right direction.
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Old Feb 19, 2025 | 02:02 AM
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Ride height is determined by tire diameter, more than wheel diameter.
Oem front tire sizing on a C5 is 245/45/17 = 25.7" tall
Oem rear tire sizing on a C5 is a 275/40/18 = 26.7" tall
---------------------------------------------------------------------------
Equivalent diameter in a 19" front is 245/40/19 = 25.9" tall
Equivalent diameter in a 19" rear is a 285/35/19 = 26.9" tall

OP, you should ask a Moderator or Admin to edit your forum handle. Not a good idea to use your email address.
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Old Feb 19, 2025 | 08:37 AM
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For the best AH results you should have the front tires at least 1/2" smaller diameter than the rear.
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Old Feb 19, 2025 | 11:59 AM
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Look thru this thread from C5 general sticky
https://www.corvetteforum.com/forums...your-info.html
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Old Feb 19, 2025 | 12:22 PM
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19\20 setup, lowered slightly on stock bolts
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Old Feb 20, 2025 | 09:43 AM
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Originally Posted by USAZR1
Ride height is determined by tire diameter, more than wheel diameter.
Oem front tire sizing on a C5 is 245/45/17 = 25.7" tall
Oem rear tire sizing on a C5 is a 275/40/18 = 26.7" tall
---------------------------------------------------------------------------
Equivalent diameter in a 19" front is 245/40/19 = 25.9" tall
Equivalent diameter in a 19" rear is a 285/35/19 = 26.9" tall

OP, you should ask a Moderator or Admin to edit your forum handle. Not a good idea to use your email address.
A C7 Grand Sport has a front tire size of P285/30ZR19 with a tire height of 26.6” and a rear tire size of P335/25ZR20 with a tire height of 25.5”.

Not sure if the width will work without a mini-tub or flairs, but the height will be fine.

Last edited by 99FRC Newb; Feb 21, 2025 at 02:22 PM.
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Old Feb 20, 2025 | 09:40 PM
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Originally Posted by 99FRC Newb
A C7 Grand Sport has a front tire size of P285/30ZR19 with a tire height of 26.6” and a rear tire size of P335/25ZR20 with a tire height of 25.5”.
Not sure if the width will work without a mini-tub or flairs, but the height will be fine.
A minitub would be worthless, with those rear offsets. With the advent of widebody fenders, minitubbing is not the option it once was.
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