Brake screech
01-04-2015, 08:31 PM
#1
Brake screech
I went for a nice ride today and am up to 270 miles now. Car is feeling better each time I take it out and sure wants to rev. My breaks are still screeching very loud when breaking for a light or stop sign. For those of you with more miles when does this go away? Very annoying and embarrassing when pulling up next to someone.
Car is flat out amazing and the most invigorating car I have ever owned.
Car is flat out amazing and the most invigorating car I have ever owned.
01-04-2015, 08:38 PM
#4
Three Wheelin'
BEDDING IN BRAKES
Step 1 Find a long stretch of unpopulated road.
Step 2 Go from 70 to 0 hard but not so hard that ABS kicks in.
Step 3 Rinse and repeat 10 times.
Step 4 Enjoy your squeal free brakes.
Dan (says it doesn't matter if they're steel or PCCB)
Step 1 Find a long stretch of unpopulated road.
Step 2 Go from 70 to 0 hard but not so hard that ABS kicks in.
Step 3 Rinse and repeat 10 times.
Step 4 Enjoy your squeal free brakes.
Dan (says it doesn't matter if they're steel or PCCB)
01-04-2015, 09:05 PM
#7
Iron brakes, not steel.
My PCCB's on a TTS have never squealed, so I'm hopeful I'll not have any on my incoming GT3 w/PCCB's.
My PCCB's on a TTS have never squealed, so I'm hopeful I'll not have any on my incoming GT3 w/PCCB's.
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01-04-2015, 09:12 PM
#8
I think the pads and rotors need to get up to temp gradually before the actual bedding and what I once found on a Pagid insert (can't find again) goes like this:
Speed up to 70 or 80 then medium braking down to 40, wait 10 seconds or so then repeat for 10 times. This brings them to temp gradually. Then drive to 90-100 and brake hard (short of ABS) down to 40, twice. That's what I do but not sure it's better than what you said.
Sam (is pretty sure the squeal will come back because the GT3 pad has a more track oriented composition).
01-04-2015, 09:35 PM
#9
Three Wheelin'
Dan,
I think the pads and rotors need to get up to temp gradually before the actual bedding and what I once found on a Pagid insert (can't find again) goes like this:
Speed up to 70 or 80 then medium braking down to 40, wait 10 seconds or so then repeat for 10 times. This brings them to temp gradually. Then drive to 90-100 and brake hard (short of ABS) down to 40, twice. That's what I do but not sure it's better than what you said.
Sam (is pretty sure the squeal will come back because the GT3 pad has a more track oriented composition).
I think the pads and rotors need to get up to temp gradually before the actual bedding and what I once found on a Pagid insert (can't find again) goes like this:
Speed up to 70 or 80 then medium braking down to 40, wait 10 seconds or so then repeat for 10 times. This brings them to temp gradually. Then drive to 90-100 and brake hard (short of ABS) down to 40, twice. That's what I do but not sure it's better than what you said.
Sam (is pretty sure the squeal will come back because the GT3 pad has a more track oriented composition).
The squeal may come back, and you may have to repeat the bedding process. Other than that, I think the method you suggest is just fine, if not better. Me, I'll stick to simple since it's worked for me for years.
01-04-2015, 09:38 PM
#10
Actually, I think you're right about bringing the temp up gradually from what I remember. As to the speeds, I'm don't think the precise speeds matter as much as the act of braking with sufficient force to set the pads into the rotors, hopefully removing any brake dust and making an impression that results in smooth contact between pads and rotors.
The squeal may come back, and you may have to repeat the bedding process. Other than that, I think the method you suggest is just fine, if not better. Me, I'll stick to simple since it's worked for me for years.
The squeal may come back, and you may have to repeat the bedding process. Other than that, I think the method you suggest is just fine, if not better. Me, I'll stick to simple since it's worked for me for years.
01-04-2015, 09:48 PM
#11
Rennlist Member
At 1000 mi. I still get squealing. A couple of hard stops from 70 and it goes away for a time. Driving around town tends to shorten the interval. On a high note the brakes are excellent.
01-04-2015, 11:24 PM
#13
Some good information can be found here http://www.stoptech.com/technical-su...l-white-papers on bed-in and other braking topics. Personally I'd not go down to 0mph on the brakes when bedding in, or hot brakes, unless there was a necessity.
01-04-2015, 11:50 PM
#15
Three Wheelin'
I find that whether ceramics or steel/iron that squeal is most pronounced with the cold and with easing gently on the brakes around town. More abrupt application (not so much you bother the person behind you) seems IMO to help. Try it and report back to us. Medium bedding 70-35 mph could also help at operating temps.