As you found out, you cannot drive on the street with race brake pad compounds. Every once in awhile, someone gets lucky and can drive a race pad on the street quietly. Also, you shouldn’t do it because race pads not up to temp literally machine away your brake rotors.
You’ll read online about race pads and street pads are not compatible but in my 35+ years of tracking, I have not once had an issue with swapping back and forth between race pads and street pads. I suppose there’s some combo of pads that are incompatible but I haven’t found it.
I tried the Hawk HPS pads as a street pad on my e46 M3 and I absolutely hated it. It didn’t bite old and it didn’t bite hot. Hawk may have altered the pad compound since I used it but I’ll never try it again. For the street, are you looking for a daily driving type of brake pad or a high performance carving thru the mountains type of brake pad? High dust or low dust? Totally quiet or some squealing is ok?
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