Brake rotor life ?

  • Thread starter Thread starter Half a Bee
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Half a Bee

Hi

Looking at my '99 V70 (70,000 km), I noticed that the front brake rotors
have quite a bit of wear (1 to 2 mm thinner, or thereabouts) and it's
quite noticeable when comparing them to the rears (hardly worn at all).

How long are they supposed to last, and how much more will they take?
Is it a regular (i.e. 5 or 6 year) wear part, or do they last much longer ?

Cheers

Chris
 
In an earlier contribution to this discussion,
Half a Bee said:
Hi

Looking at my '99 V70 (70,000 km), I noticed that the front brake
rotors have quite a bit of wear (1 to 2 mm thinner, or thereabouts)
and it's quite noticeable when comparing them to the rears (hardly
worn at all).

How long are they supposed to last, and how much more will they take?
Is it a regular (i.e. 5 or 6 year) wear part, or do they last much
longer ?

Cheers

Chris
Click to expand...

If you take the wheel off, you will see the minimum thickness stamped on the
central part of the disc (rotor). As long as they exceed this, and are not
unduly scored or warped, stick with them!
 
I typically get 2 sets of pads to one rotor both front and rear .... front
rotors go 35k to 70k miles on my 850's depending on ratio of city to highway
driving and rear rotors go 50k to 90k.
 
Make that 35k to 50k for PADS, and 50k to 90k for PADS (sorry for the goof
where I said rotor instead of the PADS that I meant).
 
Me said:
Make that 35k to 50k for PADS, and 50k to 90k for PADS (sorry for the goof
where I said rotor instead of the PADS that I meant).
Click to expand...

Pretty much the same for me (S70, same brakes as the 850). Rear pads lasted
55k miles, original fronts still on there just past 90k.

I downshift when I brake (heel-and-toe... manual transmission... yay!), and
this helps the brakes last longer. Also, almost half of my mileage so far
is highway.

I know the rotors will last two or three sets of pads, but I like to replace
them with the pads anyway, since they're scored and rusty at five or more
years old. That's just my preference, and it isn't too much more expensive
since I do my own work.
 
We've got 150K Kms on the original front rotors on our 1993 960, on its
second or third set of pads. I think the rotors are getting a little thin
now, probably will have to change them soon enough, maybe when we do the
suspension. No warps, no pits/grooves/etc...
 
When I had taxis I used to heat up the discs if they had warped and then let
them cool down slowly as often drivers had punished the brakes then stopped
and switched off while they were extremely hot,so they warped.When I needed
to have the rotors machined (which was very rarely) again I would hot them
up cool them down slowly then have them machined as this removed the grain
effect ,otherwise as soon as newly machined rotors heated up they would warp
if cooled down slowly back to their old grain or shape ,or just buckle again
if left hot .When buckled the machined took off the highs making all level
but the lows became highs when heated up again .Hope this make sense as it
saved me many dollars from sometimes greedy mechanics .ALWAYS USE QUALITY
BRANDED PADS AS CHEAP PADS COST and are not as safe ..And change your brake
fluid to at least a quality branded type every 2 years or so ..
 
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