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Old May 29, 2017 | 12:49 PM
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Hey guys curious . Will 305/30/19 front and 345/30/20 set up work on My '17 Grandsport . Meaning throw any codes? Thank you in advance
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Old May 29, 2017 | 01:09 PM
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If you're worried about throwing codes, it won't. However, you may have to worry about rubbing particularly on the front.

Why are you interested in going wider on the front? It's not going to improve handling and may do the opposite.
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Old May 29, 2017 | 03:07 PM
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Ok thank you . Yes I agree on the handling better just for alittle more aggressive appearance.
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Old May 29, 2017 | 03:37 PM
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Originally Posted by Foosh
If you're worried about throwing codes, it won't. However, you may have to worry about rubbing particularly on the front.

Why are you interested in going wider on the front? It's not going to improve handling and may do the opposite.
One of the forum members who attend time attack used to say that the narrower front tires are 'an opportunity' to get better handling by making them bigger, especially on high HP platforms like ours.

I used to think that wider tire would have no benefit without a matching wider wheel, but that also seems to be wrong. They (a racing team in CA, and Emilio as the driver) did test a wider tire with wheels of various widths, and even the narrowest allowed wheel was able to retain most if not all the lap time benefits, but it gave less feedback.

In short, I know the OP doesn't care much about track performance, but for those who do, I'd at least keep an open mind to trying wider tires : )

Last edited by X25; May 29, 2017 at 03:38 PM.
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Old May 29, 2017 | 03:41 PM
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Originally Posted by X25
One of the forum members who attend time attack used to say that the narrower front tires are 'an opportunity' to get better handling by making them bigger, especially on high HP platforms like ours.

I used to think that wider tire would have no benefit without a matching wider wheel, but that also seems to be wrong. They (a racing team in CA, and Emilio as the driver) did test a wider tire with wheels of various widths, and even the narrowest allowed wheel was able to retain most if not all the lap time benefits, but it gave less feedback.

In short, I know the OP doesn't care much about track performance, but for those who do, I'd at least keep an open mind to trying wider tires : )
Thank you very much ..
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