wheel size addition
#32247 from Grand Touring Committee · Rule change · TB 22-05 (2022-04 Fastrack)
In Grand Touring Category Specifications, GCR Section 9.1.2.F.10.b, change as follows:
"The maximum wheel size for GT3 cars is 15 x 7”. Alternatively: GT3 cars may run up to a maximum 17" x 9" wheel with a weight
penalty equal to three (3) percent of the car's weight as listed on the specification line. The maximum vehicle weight shall be
rounded to the nearest pound.Alternatively, a Additionally: Any wheel up to 18” with a maximum tire cross section of 12.0” and a maximum tire diameter of
26.0” may be used with a weight penalty equal to eight five (5) percent of the car’s weight as listed on the specification line. The
minimum vehicle weight shall be rounded to the nearest pound. A maximum brake rotor diameter of 13.0” may be used with
alternate wheels. Cars using 15” American Racer 23.5- 10.0-15, bias ply, non-belted tire may do so without the weight penalty."