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Old 07-02-2009, 09:57 AM   #26
FromageTheDog
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Originally Posted by Dutch Scooby lover View Post
Check the rear caliper, and see if is actually still in working order.
My guess is the overheating melted something, so dirt could get in seizing the caliper.
I commute 120 miles 3 times a week, so I'm going to guess that if the caliper was dragging I'd be killing pads even sooner. That said -- you are correct; I did damage at least the piston boot with my abysmal pad choice during this last event! I've got a caliper rebuild kit on order and plan to rebuild them this weekend.
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Old 07-02-2009, 09:58 AM   #27
FromageTheDog
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Originally Posted by REX8 View Post
Not to mention 05 WRX's are much harder on rear brakes with their auto-bias feature.
Wait, what?

I've got a bit of research to do!
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Old 07-02-2009, 02:14 PM   #28
ESmooth
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Its EBD or electronic brake force distribution, a lot cars with ABS from the early 2000s and up have it.
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Old 07-02-2009, 03:09 PM   #29
MasterKwan
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Yeah, 05's have BFD. According to the manual, the rears are set to get more pressure than they did in the days of the prop-valve and the ABS pump pulls pressure off the rear wheels to control lockup. It suggests that an 05 with the ABS disabled would tend to lock the rears before the fronts.

I feel confident I could install HPS pads in the rear and they're last a summer of track days. It's hard to compare because I've switched brakes around but, I ran HPS's in the back and XP10's in the front when I had LGT brakes all the way around. For awhile there, I was tracking without ABS and I wanted to ensure that the rears wouldn't lock before the fronts. Now, if the front pads aren't aggressive enough, that by itself might make the rears work too hard.
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Old 07-02-2009, 03:48 PM   #30
REX8
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I feel confident I could install HPS pads in the rear and they're last a summer of track days. It's hard to compare because I've switched brakes around but,

Well, on 255 street tires, I sure as hell couldn't on a full weight 200 whp WRX. Didn't last a day running briskly (high 1:20's on Summit Main, pre-paving)
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Old 07-02-2009, 04:19 PM   #31
grippgoat
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Originally Posted by REX8 View Post
In general, I'm not sure what point you are trying to make, we all agree why his rear pads went so quickly. But your assumption that you can't heat a pad past ideal and not melt it off is flat out wrong.
My point is stop messing around and get some REAL race pads. I've never heard anyone refer to EBC Yellows as real race pads.

It's also not really useful to talk about how it's possible to operate a pad beyond its heat range without melting it off. You're not going to save money or have more fun by continuing to run your car that way. Either press the pedal harder and burn 'em off, or just throw 'em away and get pads that work the way you need 'em to.

With the OP's problem confined to the rear, it'll be very hard for him to know whether he's running the pads too hot through brake feedback, making the suggestion that he do so even less useful.

-Mike
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Old 10-10-2009, 04:38 PM   #32
FromageTheDog
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So finally got back to the track Friday. This time, I was running EBC Yellows in the rear, with the stock sized rear rotor. Still DS2500 pads in front (StopTech BBK). It seems to me the pads still wear faster than I expect (or wish?), but not nearly at the crazy rate they were before. At this rate, I expect to replace them maybe 3 times for every 2 sets of 2500s I go through, which I think I can live with. It definitely seems to me that the H6 rotors coupled with the StopTech BBK were at least partly to blame, but since I changed both the rear rotors and pads at once, I'll never know. At least stock-sized rotors are cheaper to replace...

Really appreciate all the feedback and pointers here, folks.
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Old 10-10-2009, 06:02 PM   #33
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Originally Posted by FromageTheDog View Post
So finally got back to the track Friday. This time, I was running EBC Yellows in the rear, with the stock sized rear rotor. Still DS2500 pads in front (StopTech BBK). It seems to me the pads still wear faster than I expect (or wish?), but not nearly at the crazy rate they were before. At this rate, I expect to replace them maybe 3 times for every 2 sets of 2500s I go through, which I think I can live with. It definitely seems to me that the H6 rotors coupled with the StopTech BBK were at least partly to blame, but since I changed both the rear rotors and pads at once, I'll never know. At least stock-sized rotors are cheaper to replace...

Really appreciate all the feedback and pointers here, folks.
Yeah, not sure why we really didn't get into that right away. You have a BBK up front. That's huge heat capacity that will prolong pad wear by a very very very large amount. You could easily double or triple your front pad life with a BBK. It's also the reason you can get away with running DS2500's up front. They're staying nice and cool.
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