What tire and wheel size for miata track car?

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rousespointer
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What tire and wheel size for miata track car?

Post by rousespointer » Mon Oct 28, 2019 9:31 pm

Picked up my third anniversary edition 1999 miata. This will be for track days only, so want the optimum wheel and tire sizes. What is a good choice for wheels? Fender lips have been slightly rolled already as it was used for drifting by previous owner. Maybe 15x8 and what tire sizes fit that?

jeffw
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Re: What tire and wheel size for miata track car?

Post by jeffw » Tue Oct 29, 2019 9:35 am

Spec miata size is 15x7 (205/50/15), so there are lots of wheels out there in that size. You can also get cheap hoosiers (SM7) in that size.

There is a tradeoff between rolling resistance (straight line speed) and grip (corner speeds) that you should be aware of.

There are a lot of folks running 15x8 with nittos and they seem happy with them.
Jeff Wasilko
On the Track: 1995 Miata #08
To the Track: 2007 Volvo 780
On the Street: 2017 Volvo V60 Polestar

TunaNoCrust
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Re: What tire and wheel size for miata track car?

Post by TunaNoCrust » Tue Oct 29, 2019 9:39 am

jeffw wrote:
Tue Oct 29, 2019 9:35 am
Spec miata size is 15x7 (205/50/15), so there are lots of wheels out there in that size. You can also get cheap hoosiers (SM7) in that size.

There is a tradeoff between rolling resistance (straight line speed) and grip (corner speeds) that you should be aware of.

There are a lot of folks running 15x8 with nittos and they seem happy with them.
To be able to capitalize on the Spec Miata sizes is a huge cost saver, a lot of those teams get rid of their tires at 3 heat cycles.

X2 on the speed tradeoff as I noticed it at WGI.
Chuck Comeau
#55 T50 2019 Toyota 86

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