On a 2010 Cadillac CTS-V these pads have about 90% of the overall bite of standard Brembo pads but have 10% dusting. They also don't wear out the front rotors as quickly. They are very quiet compared to series and run smoothly. I'd say it'll take you about a tenth or two of a second on the track, but on the road the gains you gain will easily outweigh what you lose.