RWD Wheel Width Limit Proposal
The STAC and SEB are working together to ensure we carry out a clear, strong vision for Street Touring, and STU as
The Street Touring category of vehicle modifications is meant to fit between the current Street and Street Prepared
categories. This category provides a natural competition outlet for auto enthusiasts using affordable sports cars and
sedans equipped with common suspension and engine modifications compatible with street use. The Street Touring
Ultimate class is meant to be the fastest class in the Street Touring category. It should provide members with competition
in affordable high performance cars.
SCCA Fastrack News July 2015 Page 9
It is important that we continue to provide our membership with a category that offers good balanced competition, that
is inclusive of different car types, and that respects the work that it took to grow into the strong class we see today. STU
has also seen recent enthusiasm in the form of increased requests for expanded car classing and additional allowances
that would enable fair and expanded classing.
In order to capitalize on this growth and enthusiasm, the STAC presents the following proposals for feedback to
point STU in the direction of increased stability, increased performance, and increased opportunities for classing with
Change the following language in 14.4 WHEELS:
STU - unlimited 11”
Change the following language in 14.3 TIRES:
STU (2WD, Mid-Engine, Rear-Engine) - 255mm
STU (2WD, Other) - 285mm
STU (AWD) - 255mm
The STAC is considering allowing some mid-engined cars, such as the Porsche Boxster, into STU. Per the above
proposal, these cars would be limited to the same tire size as AWD cars. After collecting data to review the performance
potential of ST mid-engined cars, allowances could be adjusted, and/or the cars could be moved if appropriate.
Note: The STAC and SEB believe the new wheel restriction will improve parity between cars that have more room for
extra-wide wheels and those that do not. This also directly addresses cost escalation issues that have been expressed
as a barrier to entry. The STAC has queried many STU competitors and found none running wheels wider than 11” so
this proposal should hopefully not be a takeback.