Wheel width?

[tomhorn1913]

Did R-models ever race on rims wider than 7" -

Or did the SCCA maintain that spec throughout the 60s?

Much obliged,
Matt

[csxsfm]

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.

[tomhorn1913]

Thanks!

[kram350]

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"!     

[tomhorn1913]

Thanks for the insight!

[SFM5S383]

Happy to join the forum having just purchased SFM5S383 at Mecum Kissimee.  I've heard A LOT of good things about you folks. :-)

[sfm5]

Happy 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!

[chris NOS]

Happy 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.

[Mikelj5S230]

Happy 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......