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tonedef131
Sep 3, 2003

I'm thinking about running my totally stock IS300 this season but I'm not sure if tires effect classing. Seems to me they would be one of the biggest categories of modification, is that so?

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tonedef131
Sep 3, 2003

Ziploc posted:

Tires will sometimes affect classing if you get a race compound tire. My local club gives you a 2% cut off your time if you have street tires but keeps you in the same class. Other local clubs in my area don't do poo poo and let street tires get raped my R-comps. I think SCCA now moves you a class if you use non-stock sized rims as well.
So it's basically just street or r-comp? Makes sense, I just wanted an idea of where I would be when I showed up.

tonedef131
Sep 3, 2003

Any helmet recommendations? I would prefer to have an open face model unless there is a huge drawback I'm missing.

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