The Hawk HB193F.670 is a rear pad set built on Hawk's High Performance Street (HPS) compound, intended for GT-R owners who want stronger stopping on the street. The High Performance Street compound offers a higher coefficient of friction over stock brake pads, and can provide 20-40% more stopping power and higher resistance to brake fade than most standard replacement pads. Owners on user forums say HPS pads wear gently on GT-R rotors and last a long time, though one noted that the downside is braking distance for speeds of 130 mph +. Stock-replacement pads rarely offer that fade resistance, so the upgrade is most justified for repeated hard stops.
Confirm fitment before ordering. Year coverage for this rear set is listed differently across sources, so check the 2009-2011 application against the manufacturer's vehicle lookup. The manufacturer states that all Hawk Performance compounds are not compatible with carbon ceramic rotors and that Hawk pads are designed to work with Iron/Metal rotors. Owners on user forums also report that Nissan's 2009-2010 guidance called for replacing pads and rotors as a set, while 2011 pads could be changed alone only after a technician confirmed the rotors were reusable.
Searching for a GT-R rear brake pad upgrade, HB193F.670 rear pads, Hawk HPS R35 GT-R street pads, or Hawk HPS bed-in procedure will lead you to the same key points. The manufacturer explains that bedding creates a transfer film, which increases stopping performance and reduces both pad and rotor wear. Proper bedding is what keeps the pads from glazing, so don't skip it after installation.
No. The manufacturer states that Hawk compounds are not compatible with carbon ceramic rotors and that Hawk pads are designed for iron or metal rotors.
Owners on user forums report that Nissan's 2009-2010 guidance was to replace pads and rotors together, and that 2011 pads could be replaced alone only after a technician confirmed the rotors were reusable. Have your rotors inspected before deciding.
Before installing, check the rotors for thickness, scoring, and grooves. The manufacturer advises that rotors should be checked for thickness within spec and not below discard depth, and surfaces inspected for deep grooves or scoring, then resurfaced or replaced as needed. Clean the rotor faces of old pad residue and grease before the new pads go on. After installation, owners on user forums quote Hawk's bedding procedure as 6-10 moderate stops from 35 MPH & 2-3 hard from 45 MPH, then a full cool-down before normal driving. Avoid dragging the brakes during bedding, since that can cause glazing.
