by Audi1 » Sun Sep 29, 2019 3:51 am
Just to clarify a point on wheels and tires.
The original intent last season (which was the first season of the SCCA Proxy), was to keep the wheels and tires looking period. We didn't want any 9mm, 10mm, 11mm or 12mm rear tires showing up in a class comprised of cars that ran up to 1965 and not beyond. The post of 15x8 was meant to be a "nominal 15x8", so that wheels from manufacturers like Slot.It, CBDesign, NSR and others would be legal. The intent was never to give a wheel dimension that precluded the use of these very common wheels. I believe that the width of the Slot.It wheels is actually 8.2mm, which, from the standpoint of period look, is, essentially, the same as 8.0mm.
As far as tires go, I know from experience that a little sanding of the sidewalls of most rubber tires will bring you well within the 8mm rule. Again, the intent of this rule was to discourage the use of 9mm or wider tires on nominal 8mm rims - which I have seen often...….. The intent, again, was to remain period in the look of the tires. So, if the wheels are nominal 15x8, and are actually 8.2mm, then I think that similarly profiled tires should be OK.
Those of you who know me, know that all of the proxies that I set up over the past 4 years were meant to be inclusive races; not exclusive races. It was never my intent to exclude potential racers based on an inability, say, to machine 8.2mm wheels down to 8.0mm or to force people to 7mm rims with an 8mm rule.
I hope this makes life and building a little easier.
Allan