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Autocross wheels and tires (archive)

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Posted by Mike Chiang on April 28, 2000 at 14:49:34:

In Reply to: Update: wheels & tires for M3 street & autocross posted by Benjamin Treynor on April 28, 2000 at 11:58:27:

Some thoughts on wheels and size.

I'd actually buy a set of NEW wheels for auto-x use and keep the stockers on for daily driving.

Why? Because competition is the only place where an optimized wheel/tire setup truly counts. Who cares how tuned your street setup is? Will you see a real ROI by cutting your commute times by 3 seconds? Or save 5 seconds going to Blockbuster Video?

That being said, I would find the lightest STOCK sized wheels available. Stock size, because the SCCA and other sanctioning bodies require stock wheel size. Lightest because that's one of the FEW places where you can shed WEIGHT in a stock class. Save weight on wheels and you save ROTATIONAL and UNSPRUNG weight.

If you're already out of stock (chip, shifter, springs..etc), I would still use the new wheels for auto-xing.

And I would stay away from 18" wheels. They LOOK good, but are heavier and are unlikely to help your times. Plus, tire prices are $$$$$ and sizes harder to find.

As far as brand goes, I think most of the really fast guys out there in BMW circles are using the Hoosiers. (FWIW, Bob Tunnell is running the g-force BFGs.. and he says they're faster.)

I've not driven on the Hoosiers yet, but I hear from some drivers they're a)FAST and b)wear out even FASTER.

In case you're wondering, I run Kumhos. They're cheap, good and wear well. 225/45 F and 255/40 R. Stock suspension, chip and UUC SS kit. (which puts me in SCCA ESP).. this setup is PLENTY of car for my intermediate skills. My local SCCA chapter sets up VERY tight courses, and this setup is enough to make my car very competative out there.

Mike


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