The Hawk BMW 135i HPS Street Rear Brake Pad (HB604F.598) uses Hawk Performance's High Performance Street compound, a friction formula the brand builds for stronger street braking than typical factory pads. The manufacturer lists an operating range of 100-700 F with a 100-500 F optimal window, which covers everyday commuting, canyon runs, and spirited weekend driving. The manufacturer also states that Hawk pads are designed for iron or metal rotors and are not compatible with carbon ceramic discs, so this pad suits the stock-style rotor setup on a 135i. Pick this over a generic economy pad when you want a compound from a brand that builds for motorsport and wants a predictable, smooth pedal feel on a turbocharged car.
Hawk lists this rear pad for the E82 135i, and the part name matches that platform. Confirm fitment against the manufacturer's application guide with your VIN before ordering, because application data varies across listings. Owners on user forums describe the rear pad change as a manageable home job: the pad wear sensor sits on the inner pad and must be moved to the new pad, and the electric parking brake motor needs to be detached so the piston can be wound back. Searchers looking for a 135i HPS rear pad upgrade, a Hawk HB604F.598 install, or E82 rear brake pads for spirited street driving will find this set relevant.
No. The manufacturer states that Hawk Performance compounds are not compatible with carbon ceramic rotors and that Hawk pads are designed for iron or metal rotors.
Details vary. Owners on user forums report different methods, with some removing the rear caliper and others working with the caliper mounted. Confirm the procedure with the manufacturer before starting.
Owners on user forums note that the wear sensor sits on the inner rear pad, on the right side of the car. The sensor pulls out of the old pad and clips into the new one, and some owners have needed to tape the sensor out of the way when pads lack a cutout for it.
Rear pad replacement on the 135i is a moderate DIY job. Owners on user forums say the work is straightforward once the car is safely raised, the wheel is off, and the parking brake motor is released. Common tools mentioned include a jack, jack stands, a Torx set, a 10mm hex for the caliper bolts, a piston-compression tool or clamp, and a brake pad spreader. Watch for the wear sensor clip and avoid pulling on its wires. Owners also report that the brake service warning may need to be reset with a BMW-capable diagnostic tool, and that the pads should be bedded in after installation.
