S2WOOOW

I went to the two day event at Thunderhill last week and it was a blast. 5 hours of track time. I also went to the Laguna Seca event last Jan. I've been watch the brake pad wear during both events, and I had to change the rears last night. One pad was down to about .04". But the fronts still have about .16" (all pads are Honda OEM). I still consider myself a beginner at the track, so I'm not super aggressive and using up an entire set in one day. I find it alittle unusual that the rears wore so much quicker than the fronts (I noticed a few people at the track change front pads because they wore out faster than the rears). It seemed like the braking performance was good, on occassion I would feel the ABS pump kick in under heavy braking. Besides the 3 days at the track, I have about 21k miles, 90% at civilized speeds. Should I be concerned? Is there any way to adjust the brake bias to the fronts a little?

VTEC Racer

When people change their pads at the track, don't they have to let the pads break in before they put heavy loads on them? I just got new pads installed all around, what is the average break-in mileage for a car that does 90% city driving?

S2WOOOW

Last time I had pads changed on another car, they told me to take it easy for 100 miles, but the brakes felt fine from day one. After changing the rears on the S2000, the brakes felt better than before, but that may have been more from the bleeding rather than the new pads. If I had new pads at the track, I would definitely take it easy for at least a lap or two and then gradually break harder and harder.

Gloffer

I think your supposed to "bed" new brake pads. Do this before you get to the track.
When I put new Porterfield R4S pads in, I take the car out to an empty stretch of road and then do 5 hard stops from 60 mph. Accelerate to 60 and brake hard to 0 mph, repeat 4 more times. By hard stop, I mean almost to the verge of engaging the ABS.

This does two things: it eliminates any old friction material from the discs and it mates the new pads to any imperfections in the old discs. You'll get a really nice smell (almost as bad as from inadvertantly spinning the clutch) from the new pads and that means your doing it right.

s2000guy

Correct me if I am wrong, but I believe the break in period applies only if the rotors are resurfaced.

VTEC Racer

Yes my rotors were resurfaced as well. So any suggestions on how many miles I should go?