The Random E46/ZHP Question Thread

[UdubBadger]

Oh, keep in mind... the EBC Yellowstuff pads also squeal a bit.

ugh i can't win. lol

2 sets it is!

[az3579]

ugh i can't win. lol

2 sets it is!

Sorry man... you probably could get away with one set while you're still starting out, but once you start getting a bit faster you'll need two sets of pads because overheated brake pads kill the entire experience.

I'd probably go with something like the Redstuff to start with, because that is a street pad that is probably OK for some "light" track use. Do the research and see what others are saying about using that on the track.

[UdubBadger]

will do thanks

[derbo]

I have sets for both caliper pairs and have run both on the track. What I said applies to both.



I don't think Laguna Seca is any more demanding per se, in my opinion. The Glen does have a couple of straights but I do brake pretty frequently in between the straights. When I run there, I run it in June, which is usually pretty hot. The same goes for Calabogie. The only track I don't run in the summer is Lime Rock.

I think the thing working against you is that you frequently run in 100+ degree days. Most of the time when I'm on track, it's 80-90, which plays a pretty big part in this...

Laguna never gets to 100+ let alone 90. Usually its about 70-80F on a hot day. What gets Laguna is the difference in elevation. The Corkscrew is about 6 stories up from the lower point in the track. Turn 2 is heavy on braking after about 115-120mph in our cars down to 40mph. But like you said, it's really hard to judge why the HP+ didn't work for me vs it worked wonders for you.

I'm just saying in my experience, the HP+ has left a pretty sour taste in my mouth.

Zeckhausen Racing:

Hawk HP PLUS high performance street pads have moderate dust, moderate rotor wear, very high initial bite and a Maximum Operating Temperature (MOT) slightly higher than Hawk HPS. They tend to be noisy, often squealing under light braking, although proper bedding can help. Ideal for autocross and may be used for track days on lower horsepower cars. Not recommended for heavy track use, as friction level falls off rapidly when MOT is exceeded.

Turner's Description:

Hawk's HP Plus pads fill the need for a "dual-purpose" pad - offering acceptable street performance that also holds up well on the racetrack. The beauty of these pads is that you can put them on at home or your shop and use them to drive to and from the track, with a full day of on-track driving in between. While these track pads actually do work on the street, noticeable increases in noise, dust, and brake wear are to be expected. These pads are great for the weekend track junkie who wants exceptional street performance while also having a capable pad on the track. They are excellent for novice and first-time drivers while also being a favorite of instructors too. And they are inexpensive compared to most full race pads.

These are not all-out racing pads, however, and they work best when used within their temperature range (100-800*F). Higher friction levels and brake temps will increase wear, especially on heavier cars. Brake cooling kits are strongly recommended. If you find these pads are not lasting, or you are exceeding their performance capability, it will be time to step into a full, dedicated track/racing pad.

[derbo]

I do wish we could do a track day together BP

[UdubBadger]

fuck it I'll just run stop tech pads and then get real track pads. I'm not gonna fuck around with faded braking at Road America.

[derbo]

fuck it I'll just run stop tech pads and then get real track pads. I'm not gonna fuck around with faded braking at Road America.

YES!

So Seth,

the MOT on the Stoptech Street pads is 1400F. That is incredible high for a street pad. I think you will be fine.

[UdubBadger]

oh i know. just want the bite i'm not getting with them right now even with drilled/slotted rotors.

[derbo]

oh i know. just want the bite i'm not getting with them right now even with drilled/slotted rotors.

Did you bed the brakes properly? Drilled rotors reduce surface area and does not provide any gain on braking performance. Slotted does as it cuts the pad to even out the pad surface. I always recommend Slotted rotors over drilled and highly shy away from drill/slotted for track rotors.

http://www.zeckhausen.com/How_to_sel...ake_rotors.htm

http://stoptech.com/technical-suppor...-system-bed-in

For a typical performance brake system using street-performance pads, a series of ten partial braking events, from 60mph down to 10mph, will typically raise the temperature of the brake components sufficiently to be considered one bed-in set. Each of the ten partial braking events should achieve moderate-to-high deceleration (about 80 to 90% of the deceleration required to lock up the brakes and/or to engage the ABS), and they should be made one after the other, without allowing the brakes to cool in between.

[UdubBadger]

Right that's what I've seen as well. Yeah I bedded the brakes I'm just missing that nice hard stopping power like I had in my 135i with the Brembos and cool carbons.


GoingHAM mobile