Rear brake pad size issue - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

norcalpb · 05-28-2020, 02:49 PM

Hello all, I just purchased Hawk DTC-30 front and rear brake pads.

I wanted to compare sizing with oem to make sure I ordered the right parts. My new front pads have the same surface area as stock, but it appears the rear pads are smaller in pad face length (pictures below)?

Since the pad is actually the same width it will cover the rear rotor no problem, but I wanted to know if this was normal before I install.

First picture is comparing to used stock, second is comparing to used Carbotech.

Rear pad part # HB671W.628

NoHaveMSG · 05-28-2020, 05:14 PM

As long as the backing plate is correct it should be okay. I have noticed this on the carbotech's I had too.

norcalpb · 05-28-2020, 05:27 PM

Quote:

Originally Posted by NoHaveMSG

As long as the backing plate is correct it should be okay. I have noticed this on the carbotech's I had too.

Backing plate is the same size so I’ll try not to worry about it.

I know there are 2 different rotors for the front and this 2 different sized pads, but the rears are the same across all regions afaik.

RayRay88 · 05-28-2020, 05:34 PM

Quote:

Originally Posted by norcalpb

Backing plate is the same size so I’ll try not to worry about it.

I know there are 2 different rotors for the front and this 2 different sized pads, but the rears are the same across all regions afaik.

Rears are different too, Vented vs Non vented rear rotors. The non vented are 4mm smaller and 8mm narrower.

norcalpb · 05-28-2020, 08:03 PM

Quote:

Originally Posted by RayRay88

Rears are different too, Vented vs Non vented rear rotors. The non vented are 4mm smaller and 8mm narrower.

I can’t even find dtc-30 for the solid rear rotors

RayRay88 · 05-29-2020, 12:55 AM

Quote:

Originally Posted by norcalpb

I can’t even find dtc-30 for the solid rear rotors

Probably because it's limited to certain euro/asian regions. All north american vehicles came with the larger front and rear vented brakes. Hawk is an american/North american centric company. Some of the other international companies have listings for both and can make it confusing.

norcalpb · 05-29-2020, 03:37 PM

So I screwed up and saw last night that the brake pads I have currently in the rear are Hawk Street/Race which are a "street version" of the DTC-30 that I just freaking bought. They are the same compound.

Is it safe to run DTC-30 in the front, and Street/Race in the rear knowing they are the same compound and essentially the same pad? The only the difference is Street/Race has chamfered edges and a backing plate shim.

05-28-2020, 02:49 PM	#1
norcalpb Senior Member Join Date: Oct 2013 Drives: 2013 BRZ, 2023 Model 3 Location: SF Bay Area Posts: 2,296 Thanks: 1,212 Thanked 861 Times in 570 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Rear brake pad size issue Hello all, I just purchased Hawk DTC-30 front and rear brake pads. I wanted to compare sizing with oem to make sure I ordered the right parts. My new front pads have the same surface area as stock, but it appears the rear pads are smaller in pad face length (pictures below)? Since the pad is actually the same width it will cover the rear rotor no problem, but I wanted to know if this was normal before I install. First picture is comparing to used stock, second is comparing to used Carbotech. Rear pad part # HB671W.628

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05-29-2020, 03:37 PM	#7
norcalpb Senior Member Join Date: Oct 2013 Drives: 2013 BRZ, 2023 Model 3 Location: SF Bay Area Posts: 2,296 Thanks: 1,212 Thanked 861 Times in 570 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	So I screwed up and saw last night that the brake pads I have currently in the rear are Hawk Street/Race which are a "street version" of the DTC-30 that I just freaking bought. They are the same compound. Is it safe to run DTC-30 in the front, and Street/Race in the rear knowing they are the same compound and essentially the same pad? The only the difference is Street/Race has chamfered edges and a backing plate shim.

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