I'm not sure why the current track definition of 'curbing' now seems to be slight ripple strips instead of the old style curbing that we all used to have (VIR still has it in the uphill esses). If the curbing were sufficiently high enough (remember the old T7 at Road Atlanta?) a car could hit it without major damage - but wouldn't WANT to do more than TOUCH it. At Topeka, they installed these damning BOLLARDS on the inside of the ripple strip that will bend a rim (or MUCH worse) if you TOUCH them. It's pretty difficult to clip the apex accurately enough to use all of the ripple strip without touching the bollards. I think all tracks should go back to the high curbing (Shannonville had it the last (and only) time I was there). That gives the formula car drivers something to work with that isn't easily "cheated" and won't unduly damage the car for a slight error. The 'stock' classes can still run right over them without problems, but it would be a LOT easier for Stewards to enforce with a clear curb.
Steve, FV80