How we Run Events in 2005

Novice Classes

Street Touring 2

Street Touring U

KARTS

Street Tire

• Novice Classes --  All entrants in a Novice Class -- say, B Stock Novice -- compete for a single set of trophies. Novices run in the same run group as their Open Class. Novice classes: see also the Novice rules.

  Stock, Street Prepared, Street Touring, and Street Modified Novices may run street tires only -- treadwear rating of 140 or more.
  Modified and Prepared Class Novices may use any Solo2 legal tire. 

   

• Street Touring 2 (ST2)  

  ST2 is an SFR-only Regional class defined below.  It is similar, but not identical to the SCCA supplemental STS2 class.

  Two seat sportscars on street tires.

  NOTE: Section 14 will be the ST rules in the 2006 Rulebook. Sections 1 thru 10 will define STS. Section 14.11 defines STX by how it varies from STS. We follow the  same method as STX for defining ST2 as follows:
  
  14.12 ST2
  
  A. The ST2 class encompasses different vehicle eligibility limits than those specified for STS, and adds a limited number of allowed modifications.
  
  1. All STS allowances carry over, including street tires, emissions, etc.
  
  2. Vehicles eligible for this class include 2-seat sports cars and sports car based 2+2s (e.g. Porsche 912, 944, and 924, Datsun 240/260/280Z 2+2, Mazda RX-7 2+2, etc) currently classified in CS, ES, GS, or HS. Vehicles eligible to compete in STS or STX are not eligible for ST2.
  
  3. Only factory limited slip differentials (LSD) are allowed on AWD vehicles as defined in section 12.4. For AWD vehicles which did not come with any sort of LSD, including center differential or transfer case, a single aftermarket LSD may be added. 2WD vehicles may use any LSD unit.
  
  4. Additionally Excluded cars: Lotus (all), Triumph TR-8, Renault Alpine, Sunbeam Tiger
  
  FWIW, there are 13 paragraphs that define the additional preparation allowances for STX. The above ST2 proposal includes only one.

  More info about ST2 [pdf] from 4d-sport.com.

   

• Street Touring U (STU) is a regional (SCCA supplemental) class.
  
  STU will follow the STX rule set, but will raise the displacement limit for otherwise STX-legal vehicles to 3.1 litres for forced induction and to unlimited displacement for natural aspiration. To accommodate the greater power of these vehicles, restrictions on wheel width are lifted and the maximum tire width will be increased to 275 for front or rear wheel drive vehicles (but will remain at 245 for AWD vehicles). Other than these limited exceptions, the STX rule set as described in 14.11 applies.
  
  This class extends the Street Touring concept to cars including the Audi S4, BMW M3 (E36), Chevrolet Camaro, Dodge Neon SRT-4, Ford Mustang, Mazda RX-8, Mitsubishi Lancer Evo 8, Pontiac Firebird, Pontiac GTO, Subaru WRX STi, Volvo S60 R, and Toyota Supra. 
  
  Excluded vehicles include the E46 M3 and the E39 M5. 
  
  In conjunction with the planned evolution of this category and of the sport as a whole, this supplemental class will not be considered for full national status until 2007. 
  
  KARTS 
• Kart Drivers, please tell Registration you are Karters. 
• Read and become familiar with the SFR Karting rules before the event

Karts will not be allowed to be driven under power through the paddock; they must be pushed either on the ground or on a portable stand

 

• Street Tire Classes -- SFR runs four indexed Street Tire classes (New for 2006).  These classes are indexed using the PAX/RTP indexes for the current year.  Stock Street Tire and Stock Street Tire Ladies allow stock category cars running street tires to compete;  SP/SM Street Tire and SP/SM Street Tire Ladies allow SP category and SM cars to run on street tires.   Must be legal according to their class rules.  Must run tires with treadwear rating of 140 or more.

At each event, classes generally run one run group later than at the previous event