Did R-models ever race on rims wider than 7" -
Or did the SCCA maintain that spec throughout the 60s?
Much obliged,
Matt
SCCA production car racing specification rules were established in the the GCR (General Competition Rules). Up until the time I quit racing, 1972, they allowed cars to run wheels up to 1.5" over their stock dimension. After that I do not know what the rules were, but most GT350s were off track by then.
Thanks!
Original American magnesiums, AKA "R" model wheels were 7". I believe the 1965 SCCA GCR allowed 1" over stock, so a 7" wheel was max width allowed. Would need to find my GCR to quote chapter and verse. The stock '65 steel and the Cragar wheel were both 6" wide. I'm sure wider wheels were sometimes used by
"mistake"!
Thanks for the insight!
Happy to join the forum having just purchased SFM5S383 at Mecum Kissimee. I've heard A LOT of good things about you folks. :-)
Quote from: SFM5S383 on January 20, 2025, 10:58:57 PMHappy to join the forum having just purchased SFM5S383 at Mecum Kissimee. I've heard A LOT of good things about you folks. :-)
Congratulations on the purchase! That was an exciting auction. Lots of fellow owners and subject matter experts here to share information. Welcome to the forum!
Quote from: SFM5S383 on January 20, 2025, 10:58:57 PMHappy to join the forum having just purchased SFM5S383 at Mecum Kissimee. I've heard A LOT of good things about you folks. :-)
Welcome ! maybe you could start a new post dedicated to 5S383 and you could get a warm welcome from a lot of members, here it's a post for the wheel width on R cars.
Quote from: SFM5S383 on January 20, 2025, 10:58:57 PMHappy to join the forum having just purchased SFM5S383 at Mecum Kissimee. I've heard A LOT of good things about you folks. :-)
Welcome, lots of knowledge here, even about trivial things......
Walt Hane referred to having run an 8 inch wide rear wheel on his GT350R in an interview reflecting on his 1966 BP championship winning season.
The GT350 was initially homologated with 7.0" wheels. "Shelby Magic" with the SCCA since production GT350's had 6" wheels. In 1967 and later the SCCA GCR was revised to allow wheels 1.5" wider than "stock", allowing Walt Hane to "legally" run an 8" wheel. My memory and understanding.