The Hawk HB581F.660 is a front pad set from Hawk Performance's High Performance Street (HPS) line, built on the HPS compound the manufacturer designed for street-legal performance cars. The manufacturer says the compound offers a higher coefficient of friction than stock pads, with 20-40% more stopping power and better resistance to brake fade than most standard replacements. For a GT-R driven hard on twisty roads or through repeated stop-and-go traffic, that fade resistance is the main reason to spend more than on a budget pad. The manufacturer also lists a smooth braking feel, consistent brake release, and gentleness on rotors, which helps extend rotor life.
The product title identifies this as a Nissan GT-R R35 front pad, but fitment for this part number is reported inconsistently across sources, and some listings point to a Volvo S60/V60 Polestar application. Confirm the vehicle and caliper type with the manufacturer before ordering. The manufacturer states these pads are designed for iron or metal rotors and are not compatible with carbon ceramic rotors, with a working range of 100-700°F and an optimal range of 100-500°F. Searches for HPS street pads, GT-R front brake upgrade, and iron rotor street pads will lead to this compound.
No. The manufacturer states that its HPS compound is not compatible with carbon ceramic rotors and that the pads are designed for iron or metal rotors.
Owners on user forums describe a bed-in sequence of several incomplete stops from moderate speeds, performed in rapid succession, before normal driving. Pads should be bedded against the rotors they will be used with.
Fitment for this part number could not be confirmed from the manufacturer's own documentation, and sources disagree on the vehicle application. Check the vehicle year, model, and caliper type with the manufacturer before purchase.
Owners on user forums describe a front pad swap as a garage-level job rather than specialist work, and one experienced owner estimates all four pad sets can be swapped in about 30-45 minutes, with jacking and wheel removal taking longer. You will need a punch and hammer to drive out the retaining pins, 13mm and 21mm sockets, a torque wrench, a low-profile trolley jack, brake cleaner, copper slip, and clean rags. Clean the caliper and hardware thoroughly, and avoid spraying cleaner onto the friction material. Compress the pistons evenly with a brake spreader before fitting the new pads, then bed the pads in before normal driving.
