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Swapped wheels to larger size.. car handles bad! is there calibration needed?

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Old 01-21-2018, 01:01 PM
  #21  
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Originally Posted by Connman
20-21's on order. 295's & 355's here too.
He was describing the ride you get! Sounds like you will be sorry. Other threads like this reflect the same. Big 21 375's tires can't give them away! I would be canceling and quick!
Old 01-21-2018, 05:29 PM
  #22  
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Stock tires are 25.8 in in diameter up front and 26.6 in in diameter in back.

You could get a 285/25/20 and that would be about right up front (about 25.6). Rather than the 27 inch diameter you have. Maybe a 325/25/21 would work out back. That would be larger but still only 27.4 in in diameter.

Check with Gerry at CW4L. I know he has done dozens of 20/21s on the Zs both C6 and C7. He likely can tell you off the top of his head if your sizes should work.
Old 01-21-2018, 05:39 PM
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Did a quick search. The last set of 20/21s Gerry did were Pirelli 295/25/20
Pirelli 355/25/21
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Old 01-21-2018, 08:56 PM
  #24  
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Originally Posted by pkincy
Did a quick search. The last set of 20/21s Gerry did were Pirelli 295/25/20
Pirelli 355/25/21
I'd bet the last 20/21 set Gerry did are the one's I just got.
Pirelli Pzero Corsa: 295/30/20, 355/25/21

Last edited by Connman; 01-21-2018 at 08:58 PM.
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Old 01-21-2018, 08:59 PM
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He is great to deal with. The OP had 295/30/20's up front. Taller than yours.
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Old 01-21-2018, 09:00 PM
  #26  
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Originally Posted by pkincy
He is great to deal with. The OP had 295/30/20's up front. Taller than yours.
Sorry, I had them reversed. Edited to change.



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