"dizzy" <dizzy (AT) nospam (DOT) invalid> wrote

This is going to vary a lot depending on your driving habits, etc. Warped
rotors are not always caused by wear. In fact, they are usualy caused by
the heating and uneven cooling of the disk rotor, regardless of how thick
they are. Thinner rotors are more apt to warp, but just because they are
thin does not mean they will warp. And just because they warped does not
mean they were thin.

-Fred W

"Tom Korth" <tkorth1nospam (AT) comcast (DOT) net> wrote

It is entirely possible, but your braking habits can cause you to need new
rotors with each set of pads. I know that I have installed brakes on my E36
twice, and I replaced the rotors once. I bought my car with 100,000 miles in
2000 and the rotors were original as far as I can tell. I have put another
100,000 since, and the rotors (front only) have been replaced once at about
130,000. So, if the brake pads last about 40,000, then the rotors last
through 3 sets of pads.

Of course you mileage may vary, but my inclination is that you probably do
not need rotors yet. I could be wrong because there are many variables that
I can not see from my side of the computer screen, but unless you are very
aggressive with the brake pedal, your rotors should be OK.

In article <1emdndsZ4p9blOTcRVn-sA (AT) adelphia (DOT) com>,
Fred W. <Fred.Wills@'remove this to reply to' myrealbox.com> wrote:
If you do have such vastly varying pad thicknesses though, I'd be looking
for a sticking caliper.

--
*You sound reasonable......time to up my medication

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.

I just had my 30,000 miles service on a '00 328CI; Rear rotors below spec
and pads on all four were needed. This was my 78y.o. MOTHER'S car so I know
she did not use it as a "racer"! OUCH!

"Dave Plowman (News)" <dave (AT) davenoise (DOT) co.uk> wrote

Agreed. They should wear pretty evenly. If they don't, the calipers are
binding and putting more pressure on one side of the rotor or one end of the
pad.

-Fred W

"mjc" <candc (AT) cal (DOT) net> wrote

I find it extremely unlikely that the rear rotors were worn below spec in a
30k mile car.
Personally, I'd get a second opinion... if it's not already too late.

-Fred W

I agree with Fred, needing new rotors after only 30,000 miles is way too
soon, especially on the rear.

Your mother is being taken advantage of.

It is not even reasonable that she would need rear brake pads, much less new
rear brake rotors. You mother should be going through front pads at a ratio
of two (or more) to one, that is two sets of front brakes for each set of
rear brakes.

If it is true that she needs this much brake work after only 30,000 miles,
then perhaps she is in the habit of leaving her left foot on the brake pedal
as she is driving. This would still cause more wear to the front brakes
though.




"mjc" <candc (AT) cal (DOT) net> wrote

mjc wrote:

I agree with other posters here - this seems unreasonable unless there is a
stuck caliper - which they should have mentioned.

When I took my 97 328 in for Inspection I at 18,000 miles, dealer told me my
brake pads were 50% worn. I really didn't believe it, but wasn't going to
argue (free maintenance and all that). I came back for inspection II at
35,500, so that it was still on their nickel - went to parts department and
purchased a set of pads with my CCA discount. Handed them to the service
advisor and said "Here, install these while your at it" He wanted to charge me
$$, so I showed him the BMW maintenance manual where it stated that for
Inspections (still free for me) they were supposed to remove completely, and
reinstall the brake pads. "You told me at 18K miles I was 50% worn, so now at
~ 36K I must be 100% worn, and you cannot double charge for the labor" He was
kind of burned, but I had them.

Asked for the old pads to be returned to me (they must do this under CA law)
and when I got home the pad thickness measured 10mm all around. I'm still
waiting for the second set of pads to wear out now at 114K miles whereupon I
will reinstall the originals and finish them off.

What a scam.

Frank

In article <41799F06.FB19FD42 (AT) NOSPAMCovad (DOT) net>,
Raybender <raybender (AT) NOSPAMCovad (DOT) net> wrote:
How can you be sure you really are getting your ones back?

--
*Puritanism: The haunting fear that someone, somewhere may be happy.

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote:

Well, of course I wasn't able to watch them, but relying on the law, as well
as human laziness (to avoid extra work just in order to fool me) plus the
fact that the returned pads looked almost new (extra cost to find such), and
the wear matched my expectations (confirmed by now after 78K miles on the
second set of pads with about 5mm of pad still left) I 'suspect' that they
were, indeed, my original pads.

Frank