New rotors equalls to new pads. The old pads will be worn in already to the old rotors.
I'm thinking about ordering new front rotors today from BMA (probably brembos, unless someone can convince me otherwise)
I put on a new set of pads in the fall, and I'm sure they still have lots of life in them, but I'm sure they've formed a comfort fit with the old rotors...
I don't want to put the old pads to new rotors and cause the new rotors to get grooved early on...
So do I spend the extra 50-60 bucks and just buy new pads too?? I'd rather spend as little as possible, and don't want to take the old pads off before their used up.
Former: 95-530iM
Current: 99 GMC Seirra 1500
New rotors equalls to new pads. The old pads will be worn in already to the old rotors.
BMP Designs recommends breaking in new rotors with the to used on them (i.e. use what ya got) and it will enhance the life of the rotor. I've never had a new rotor-new pad combo on any car I've ever owned.Originally Posted by PhilipJCaputo
-ashley
'92 525iA / 179k miles / Born 3.92 / ABS / No ASC / stock / North Carolina
Paper Gaskets Suck!
I've never matched them and never had any problems. If the current rotors are really scored, it might take a while for the brake pads to bed to the new rotors. Also, if you were running a very hard pad (ie track pad) and they were scored, might not want to reuse them on new rotors.
I think the official party line is to use new pads with new rotors...
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
new pads with new rotors, new pads with old rotors not old pads with new rotors. remember to read up on the proper bedding of them.
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
"If possible, new discs should be bedded with used pads of the same compound that will be used going forward."Originally Posted by 632 Regal
Full Article:
http://www.stoptech.com/whitepapers/...otors_myth.htm
-ashley
'92 525iA / 179k miles / Born 3.92 / ABS / No ASC / stock / North Carolina
Paper Gaskets Suck!
that's a first for me. I was always told to put new pads in when getting new rotors.Originally Posted by acyre
I'm actually looking forward to bedding the new rotors!!! I bedded the pads/rotors on my fiance's Jetta last weekend.... after about the 4-5th fast 60-10 stop, I check the rearview mirror and there was a trail of smoke right behind the car!
it was actually kind of fun! I mean when do you really get to do something like that to your car on purpose?
Former: 95-530iM
Current: 99 GMC Seirra 1500
this is almost becoming "blue antifreeze or not"Originally Posted by Rory535i
Former: 95-530iM
Current: 99 GMC Seirra 1500
just have the rotors turned by a machine shop and you'd be good to go. They check if it can be turned or not. I went through this exercise on my other car but purchased a new set of raybestos pads. I paid $7.50/rotor plus disposal fee. Getting rid of ridges in the rotors makes a huge difference when braking--feels very smooth...no pulsating feel. Since the rotors had been machined, I decided to go with the raybestos pads cuz they are gentler on the rotors as per Bill R's brake post from a while back. I didn't want to get a pad that'd be harsh on the thinner/machined rotors.