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Last Post 11 Jan 2016 12:24 AM by  drdisque
Tires 2104 mustang 3.7l auto
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New Member
New Member

10 Jan 2016 01:10 PM
    Second year in autocross and looking to get new summer performance tires and wheels. I would be replacing p235/50 18 pirelli tires all season tires. Being a heavier car I was wondering if a tire manufacturer and a tires size be better for running autocross. Would staggering the front and back help? It's on a daily driver so I would be putting them on in April and replacing the with all seasons in October.
    Veteran Member
    Veteran Member

    10 Jan 2016 04:27 PM
    Are you staying stock width wheels?

    For autocross performance, the RE71R is probably the droid you are looking for. How wide depends on how wide of wheels you run. I use 275-35-19 on our V8 Brembo car and they work fine. Don't worry about stagger.

    Basic Member
    Basic Member

    11 Jan 2016 12:24 AM
    There are no extreme performance tires in the OE size or 245/50/18.

    or 255/45/18

    However, in 245/45/18, which will fit your stock rims, the Bridgestone RE-71R is available.

    These tires have 2.2% smaller diameter than your stock tires, so they will make your gearing a little bit better (I doubt you're coming anywhere close to running out of second gear with that car), but they will make your speedometer read 2.2% faster than you are actually travelling, so be aware of that.
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