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Brake Rotor Thickness

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Just got a shiny new rotor caliper & wanted to try it out. All rotors are getting near or in case of the rear actually just a bit under specs.

1. How far can I push my luck (realizing responses will vary & no one will be held liable) as to how much leeway I can push. Fronts are right about on the line Rear is about 1/2mm under. All rotors look good, minimal grooves, under 20k on all pads. I ride like aged geezer so am very light on the brakes and never have to "get on them" in emergency stoppage. Braking is quite good nonetheless and rarely need more than 2 fingers on the front lever to do anything I need. Any & all opinions welcomed.

2. Nonetheless been looking at cost of replacement. Shows up at $250+ for new OEM. Little choice if any for new aftermarket. Most seem to hit $150-$175 ea. Even a used one on ebay wants $175! Any secret sources you know of if I must R&R all three?

3. If I did R&R the rotors, could I take the pads down carefully with grit paper to re-establish an even surface since there is a lot of meat left there?

Thanks,

DH
 
I don't see a problem with running them a little thin. Particularly since you don't push the bike repeatedly for all it's worth. Running on a race track where the rotors heat up super hot would be the main reason for concern.
 
What bike do you have? I recently learned that several Hondas use a rotor similar in size to the early single disc bikes. You would need a spacer, but the rotors are all over Ebay for decent prices.
 
suzukizone said:
3. If I did R&R the rotors, could I take the pads down carefully with grit paper to re-establish an even surface since there is a lot of meat left there?

Thanks,

DH
Click to expand...

I have done that in the past when my wallet was a little thinner. Put the sand paper on something very flat and then rub the pad with steady pressure in a figure 8 rotation. If the thickness of all the pads are near identical you will be OK. If one is much thinner than the others, has tapered wear (so its like a wedge) or has a really deep groove you will need new pads.
 
Last edited:
Not to intrude here, but can anyone identify which suzuki bike these front rotors are off? Long story, bewildered CL seller,
note the spoke pattern

image.jpg
 
tom203 said:
Not to intrude here, but can anyone identify which suzuki bike these front rotors are off? Long story, bewildered CL seller,
note the spoke pattern

View attachment 55672
Click to expand...

Boy, that would be impressive if somebody could identify them. One front, one rear how bout an '82 GS750 T?

Nevermind, drum in back on the T.
 
Last edited:
hannibal said:
What bike do you have? I recently learned that several Hondas use a rotor similar in size to the early single disc bikes. You would need a spacer, but the rotors are all over Ebay for decent prices.
Click to expand...

Sorry, getting old. Usually start all posts w/ ID of bike. Roadkill is a 1981 GS850G w/ anywhere between 77k and 177k (long story, just not really sure as strange evidence as to the truth)

DH
 
TxGSrider said:
Look kinda like my GS1100EZ brakes.
Click to expand...

they came mounted to a 19 inch wheel identical to my 1981 650L.....I was after the rim. Seller sorta thought they were off a 550 but no 550's came with twin discs,right? I suspect they are from a 1981 gs650E or G...in which case they also fit lots of other suzukis .
 
tom203 said:
they came mounted to a 19 inch wheel identical to my 1981 650L.....I was after the rim. Seller sorta thought they were off a 550 but no 550's came with twin discs,right? I suspect they are from a 1981 gs650E or G...in which case they also fit lots of other suzukis .
Click to expand...

My 82 GS1100EZ had a 19" front rim too. According to this: https://www.partzilla.com/product/suzuki/59211-45250?ref=65cd504058e81cbf3471fd11ea31ebff2796b271 those rotors were used on allot of suzukis from 80-83
 
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