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355/30R19 Tires

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Old Jun 10, 2022 | 12:50 PM
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Default 355/30R19 Tires

Hi Everyone,
I have a 2011 Grand Sport and want to replace the rear tires on my stock wheels, leaving the fronts with the stock size. Seems like the 345/30R19 size is not readily available yet there's plenty in the 355/R3019 size. Has anyone run the stock 275/35R18 front tires with 355/30R19 rear tires and have not run into AH/TC problems? I appreciate all your responses.
Larry
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Old Jun 10, 2022 | 01:11 PM
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Originally Posted by TRVette01
Hi Everyone,
I have a 2011 Grand Sport and want to replace the rear tires on my stock wheels, leaving the fronts with the stock size. Seems like the 345/30R19 size is not readily available yet there's plenty in the 355/R3019 size. Has anyone run the stock 275/35R18 front tires with 355/30R19 rear tires and have not run into AH/TC problems? I appreciate all your responses.
Larry
a 345/30/19 and a 355/30/19 actually both work out to be 27 inches so you should be fine.

Tire Height Calculator (tiresize.com) super handy tool if you ever get hung up on tire sizes.
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Old Jun 10, 2022 | 03:48 PM
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If you are referring to the Kumhos, i ran that size combo with no warning lights. The rears did rub on fiberglass rear fenders causing slight damage. Make sure your car isn't slammed to the ground.
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Old Jun 12, 2022 | 12:18 PM
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If you have mounted 355/30R19 tires on stock Grand Sport, Z06 or ZR1 wheels, not lowered, did the 355 tire stick out past the rear flared fenders at the top? I'm currently looking at the Michelin Pilot Sport 4S.
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Old Jun 13, 2022 | 07:51 PM
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Will these not be too tall???
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Old Jun 13, 2022 | 08:09 PM
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Originally Posted by TRVette01
If you have mounted 355/30R19 tires on stock Grand Sport, Z06 or ZR1 wheels, not lowered, did the 355 tire stick out past the rear flared fenders at the top? I'm currently looking at the Michelin Pilot Sport 4S.
These are flush with the fenders. They rubbed over bumps
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Old Jun 13, 2022 | 10:13 PM
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Default RE: 355/30R18 Tires

GS_DAN, was your Vette lowered causing the tires to rub the fenders when hitting a bump? The height difference from the stock 325s is only .3 inches.
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Old Jun 13, 2022 | 10:47 PM
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Originally Posted by TRVette01
GS_DAN, was your Vette lowered causing the tires to rub the fenders when hitting a bump? The height difference from the stock 325s is only .3 inches.
Yes, I believe it was because I was lowered. Stock height you should be fine. They are also very

Great tire for the money, however they are quite heavy if that matters
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