Quote:
Originally Posted by SSLance
I've been involved with this discussion on the SCCA level in regards to their CAM class.
IMHO, a tire width rule is the simplest easiest way to separate the cars. My proposal was for 2 classes, one 275 series tires and under, the other for any car with wider tires. In their case the 3rd class for the 2 seaters is also appropriate and I don't have a problem with it either.
It really doesn't matter how much power you make or handle you have tuned into your car...if it's only got so much tire to grip the track, that's as fast as you are going to go. I see no need to further separate the body styles, model year, extent of mods...any further than tire size.
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I think you need more than tire size. You put identical sizes on any 69 Camaro you want and a newer Vette, and with similar drivers and power the Vette wins every time. There's such a difference in aero, track width, center of gravity, etc. that the older car cannot make up the difference.
Here's a good example. Take a new ZR1 and "Jackass". They have identical engines, wheels/tires/brakes. Put Mark in both cars and he'll be much faster on the track in the new ZR1.