For reference the R4s are about a Cf of .52 or .53 From what I've been able to dig up.
Pretty good and what I'd term a very good 'performance' pad. Not on par with true race pads, depending upon the required bite of course. Ues by myself on many open wheel cars, they do well on light cars and with moderate temp levels. Higher weight and extreme temps may find them not quite up to the task of a better pad.
Still all in all, probably one of the most good all around pads you'll find for moderate performance use and light track days.
