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Old 10-11-2015, 11:08 AM   #1
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Auto-X clarification please

I drive a 2004 base Boxster in PCA S-01 class. This is a stock class that allows you to use any of the tire/wheel combos available for that year. A 1999 Boxster in my class has the same wheel and tire diameter,and the same Potenza RE-11's, but his track is obviously much wider in the rear than my car. I believe he is using spacers to increase the rear track and get better grip. Would this not bump him into a modified class? He is a veteran auto-xer and consistently fastest in this class, in fact, faster than Boxster S models in S-02 class. I read the auto-x rules but this isn't specifically addressed. What do you guys think? I want to make sure there is an even playing field. Thanks for any insight given.

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Old 10-11-2015, 12:27 PM   #2
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Quote:
Originally Posted by Blackcloud View Post
I drive a 2004 base Boxster in PCA S-01 class. This is a stock class that allows you to use any of the tire/wheel combos available for that year. A 1999 Boxster in my class has the same wheel and tire diameter,and the same Potenza RE-11's, but his track is obviously much wider in the rear than my car. I believe he is using spacers to increase the rear track and get better grip. Would this not bump him into a modified class? He is a veteran auto-xer and consistently fastest in this class, in fact, faster than Boxster S models in S-02 class. I read the auto-x rules but this isn't specifically addressed. What do you guys think? I want to make sure there is an even playing field. Thanks for any insight given.
I didn't think spacers were allowed in AX but I haven't AX'd in a couple of years so maybe things have changed.
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Old 10-11-2015, 02:49 PM   #3
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Pretty sure that spacers put the car into the production class.

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No aftermarket equipment that might be reasonably perceived as performance affecting is permitted in these classes.Items included in this restriction include, but may not be limited to, aftermarket air filters, aftermarket exhaust systems, aerodynamic aids, computer chips, five/six point seatbelts, race seats, harness bars, roll bars, roll cages,etc.
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A-2.5.5.2. Suspension
(b) Track Width: Modifications to track width are permitted provided no modifications to the automobile, other than increasing the stud length, are performed. Increase may not be more than 1.0” over stock. Only 356 models with drum and very early disc brakes may use individual spacers for each wheel stud.]
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Old 10-11-2015, 03:59 PM   #4
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For showroom stock, in our Zone 8 rules for 2016, you can increase the track up to 14mm with wheel offset. It does not say one way or another about spacers. The current rules just say the tires must be covered by the fenders and you can not modify the fenders
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Old 10-11-2015, 10:09 PM   #5
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Quote:
Originally Posted by Blackcloud View Post
I drive a 2004 base Boxster in PCA S-01 class. This is a stock class that allows you to use any of the tire/wheel combos available for that year. A 1999 Boxster in my class has the same wheel and tire diameter,and the same Potenza RE-11's, but his track is obviously much wider in the rear than my car. I believe he is using spacers to increase the rear track and get better grip. Would this not bump him into a modified class? He is a veteran auto-xer and consistently fastest in this class, in fact, faster than Boxster S models in S-02 class. I read the auto-x rules but this isn't specifically addressed. What do you guys think? I want to make sure there is an even playing field. Thanks for any insight given.
If spacers are not prohibited in your rules then he is running legally. The wider track might result in a .0005 second advantage on a 30 sec AX course. The rest is driver skill. Arrange a ride in his right seat to see where the differences lie.

Spacers are not allowed in SCCA Showroom stock but are allowed with limitations in PCA Zone 8 and I believe national Parade rules as well.
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Last edited by Topless; 10-11-2015 at 10:18 PM.
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Old 10-12-2015, 09:00 AM   #6
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Thanks guys. Mitch

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