Member
Who's making the highest mu pads now?
I'm running ST-47's, and am quite happy with them. (They advertise a mu of ~0.63).
I'd love an "ST-49", cause I'm booster-less.
Member
Have never ran Raybestos pads but the Hawk DTC-70's (sprint pads) we run appear to have significantly higher mu of around .85.
Even the endurance DTC-60 is around 0.75.
Member
Interesting, I'd just asked a buddy about the DTC 70s and 80s.
I was going by this.
file.jpeg
Member
Strange. The one I was used to have much different readings/graphic but that one is on their webpage so presumably correct!
Member
The 80s still may be worth a try. These mu numbers are self measured/advertised, so who knows!
Member
The old graph that showed DTCs had a mu of almost .9 was scientifically implausible. I'm glad they updated it.Originally Posted by olemiss540
#buttstuff2k14
BMW CCA Member
Would you recommend ST-47's for an E36 328i with factory brakes and 200TW (or Toyo RR's)? I'm wondering if I'll still have any pedal modulation, or if the ST43's would be a better fit for that.
I've driven on ST43's on a 128 at an autocross, but obviously not a good comparison to an older E36.
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Member
I ran them on my E36 M3, with Toyo RRs. Yea, they can be a bit much. Threshold braking feel was good. Anything ~50% or less than threshold took me a few days to adjust to how little pedal pressure it took to make large changes in the brake torque applied. I'm not saying no, but just be aware that they'll take some time in the saddle to adjust to. They also need some decent heat to get into the real form. They wear fantastic (I've got a light car), and are pretty easy on rotors. I've gone to a booster-less setup, so would like even a bit higher mu. (I don't have teenage knees.)
Maybe try ST45's as a step up?
#buttstuff2k14
BMW CCA Member
Thanks! I'll call Raybestos as they don't have ST45's listed for the 328, but they're all custom made anyways. It seems to have the best cold bite of the bunch and tapers down to ST43 levels of bite when up to temp according to their chart.I ran them on my E36 M3, with Toyo RRs. Yea, they can be a bit much. Threshold braking feel was good. Anything ~50% or less than threshold took me a few days to adjust to how little pedal pressure it took to make large changes in the brake torque applied. I'm not saying no, but just be aware that they'll take some time in the saddle to adjust to. They also need some decent heat to get into the real form. They wear fantastic (I've got a light car), and are pretty easy on rotors. I've gone to a booster-less setup, so would like even a bit higher mu. (I don't have teenage knees.
Maybe try ST45's as a step up?
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Member
I don't actually know what the mu is for the CSG pads I'm running but they grip hard enough that I'm not using much more pedal force than stock to stop the car. I'm also running boosterless with Lee's 7:1 pedal ratio kit.
Member
That's good info. Which CSG pad? Sprint C2 or C21 or ?
I'm at 6.33:1 pedal ratio with my current setup, and might fab up a pedal to get to 7:1.
Member
IIRC (sorry, been forever since I checked, I'm kinda helping with testing) my combo is C2 front/C1 rear. I'm still waiting on the correct rear shape to come in.
Between the stiffness of the pads, the 7:1 pedal ratio and the Castrol SRF, I actually don't have enough brake pedal travel for my personal preference. If I were to step-down my MC's from 3/4" to 5/8" I think the pedal stiffness might go down to nearly stock force levels.
Member
Thanks for the info. They don't appear to have the pads for the Brembo/Porsche front calipers, so bummer.
I did find this on their web site. Which I think reinforces that there's no standardized measurement for published mu #'s.
CSGmu.jpg
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