[SCCA SOLO] Solo Car Classifications

This is derived from portions of the 2006 National SCCA Solo Rules (Copyright Sports Car Club of America 2006; all rights reserved).

It is believed to be correct, but any questions should be referred to the official rules as published by the SCCA. Buy your own copy! It has been provided to help you new (and veteran) solo drivers to determine the class in which your car will run, then check out what you're up against!

If you have rules questions,
Click to email Doug Gill, SCCA Solo Technical Manager, at solotech@scca.com

Your webmaster does not have special authority or knowledge about the rules.  And he gets cranky if he believes you have not read the rules first.  Contact me if the page does not work.

SCCA Now Maintains the Solo Rulebook online!

So, I will no longer be reporting classification rules here.  To see all the rules, go to

 http://www.scca.org/documents/Solo%20Rules/2008_Solo_Rules_2.pdf

and use Acrobat Reader to read them.

Because the car classifications are updated frequently, and SCCA 
still does not maintain a list sorted by Make (which is really essential),
I'll keep the Stock and Street Prepared lists up to date as I can.  Here
are the 2006 lists, updated with FasTrack info:

Stock, Street Touring, Street Prepared, or Street Modified?

Cars must either be specifically classified in the official lists or must have been to be eligible to run in Stock or Street Prepared categories. Street Touring and Street Mod Category Rules do not specify these restrictions, but most or all eligible cars will meet them.

If your car does not meet these criteria, it might be classified in the modified category, or may be eligible to run only in regional open classes (e.g. SFR's Open Street Prepared). If it does, the information below can help you classify your car. Consult the SCCA Solo I & II Rules for details of the differences between the Categories.

Stock

As a rough guide, if your car has modifications beyond this list it is not eligible for Stock Category:

Street Touring - S

If your car is a normally aspirated sedan (four seats, four factory seatbelts, not sports-car derived) of 3.1 Liters or less, or one of a few small turbocharged cars specified in the rules, and perhaps prepared further than allowed in Stock Category, it may be eligible for one of the Street Touring Classes. Street Touring - S is an SCCA National class, but Street Touring-R is an optional Regional only class.  Street Touring allows anything allowed in Stock, plus (roughly) these modifications:

Street Touring - 2

This is a regional class implemented in San Francisco and other places, not a National class.  Same limitations as Street Touring - S, but generally allows 2-seater sports cars cars and 2 + 2 sports-car derivatives.

Street Touring - X

Same limitations as Street Touring - S, but generally allows cars up to 5 liters or 2 liters turbo- or supercharged, with Limited Slip Differential, and certain other extensions.

Street Touring - U

Same limitations as Street Touring - X, but generally allows cars of unlimited displacement , or up to 3.1 liters turbo- or supercharged, with unrestricted wheel width, tire width up to 275 (RWD) or 245 (AWD), .

Street Modified

Street Modified is a pretty free-for-all class that is a full National class since 2002.  For streetable sedans, expands eligible vehicles and modifications above Street Touring, above Steet Prepared, and perhaps even above Prepared category.

Street Modified 2

Street Modified 2  is a new optional Regional class beginning in 2002.  It has similar rules to SM, but allows 2-seater cars, and cars too light or small to qualify for SM.

Street Prepared and Beyond...

More vehicles and different changes are allowed in Street Prepared, but major modification will put you in the Prepared or even a Modified category; consult the rules for details. 
You are making visit no. 34,662 to this page since I fixed the counter on 7/21/07. Thanks! (over 500,000 hits before that!)
...Jerry Mouton || sccasolo@moutons.org || Last modified 7/21/07