Hi, I am new to autocross and I was wondering if I can participate in stock class if I have an aftermarket rims and low profile tires, the height of the tire is 17" and its wide. I bought the car with it and I do not want to spend alot of money buying new rims when i can use that same money for stiffer springs and swaybar. I also want to know, can you have a roll bar? (my car is 91 prelude automatic, I want to gain experience first then convert to manual)

NOPE, and front only.

Stock rules states that you have to have factory diameter and width, so 14 or 15 in your case. The offset has to be with in +-.25inches

The front sway bar can be removed, or changed as well as the bushings that attach it. No modifications can be made for the rear bar.
Springs must be factory and be with in factory ride height limits.
Shocks may be modified and can't have more than 2 adjustments.
Roll cages are allowed in stock class.

Looks like you'll be in Street Touring, A.K.A. ST
Full SCCA rule book can be found here...
http://www.scca.com/documents/2011%2...lo%20Rules.pdf

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One caveat -- this is all true if you're running with an SCCA region. You don't say where you are, or who you're running with, so it's impossible to tell, but preparation rules vary across SCCA, NASA, a couple of different Canadian sanctioning bodies, and a host of independent clubs.

At this stage, don't worry about modifying the car any, especially since you're handicapped with an automatic transmission. Pile up some seat time, get some experienced folks to help you out, and see where that all takes you...after a year, you'll have a better idea of where you want to go with the car.

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Jamie
'92 Prelude Si, '01 Miata, '63 Suburban
Caretaker of Alpina B10 3.5 #92
35 years continuous years with Preludes
Speed Demon Racing
Jamie on LinkedIn

As far as the rules, These guys broke it down. Your tire problem? Get Honda steelies 4x100 bolt pattern for 88-91 preludes. 4x113 for 92-96, and If you have a 97-2001; you have a HUGE database of wheels, Rsx, Prelude, CL's TL's and Accords, new Civics with 5 bolt patterns. The Steelies haven't been turned down yet, being "Stock Production"

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