Subaru: Chronic brake rotor warping - 2001 Outback Legacy

"Jerry C Shaw" <net> writes:
 

Once you cut rotors, they're thinner, and more prone to warping
again.

Sounds like time for fresh rotors, and taking stock of your wheel
torque. A not-uncommon cause of rotor warpage are clue-impaired techs
using air-driven wrenches to tighten lugnuts to the improper torque. A
hand torque wrench is a wise investment.


--
Todd H.
2001 Legacy Outback Wagon, 2.5L H-4
Chicago, Illinois USA

First cutting at 30K on factory new rotors, all dealer servicing. I would
think they would know what torque to use. They also did tire rotation and
new tires. Second cutting at 60K front/rear.

New rotors front and rear at 80K, now 9K later same thing.. Bad design with
too small braking area. Again, read my note.

"Todd H." <net> wrote in message news:com... 
at 
rotors 
upon 

On Tue, 21 Oct 2003 21:22:06 GMT, "Jerry C Shaw" <net>
wrote in news:2shlb.198920$%h1.192739@sccrnsc02:
 

You would think a mechanic could avoid over-tightening wheel nut/bolts
but it happens quite often as they're too lazy to torque them properly
and it's quicker to simply use the air wrench.
 

This topic comes up quite often. It is more likely either the
rotors were not broken in properly or the wheel nut/bolts
were over-torqued.

http://www.stoptech.com/whitepapers/warped_rotors_myth.htm

I haven't had a warped rotor since I started torquing my own wheels.
They used to be common when I took my car to a dealer for servicing
and didn't check and correct the torque.

Sounds like over heated brakes by clamping hard on brakes during cool down
after hard braking. Just too many times to often makes me think maybe a
change in driving habits are in order. Were the calipers check for excessive
dragging? ed
"Jerry C Shaw" <net> wrote in message
news:2shlb.198920$%.. 
with 
news:com... 

Hi,
If you're replacing with dealer parts(OEM), try sosme after market
rotors. And double check the torque yourself.
Tony

Jerry C Shaw wrote:
 

2001 Outback with former braking vibration.
Replaced pads with best aftermarkt $43 pads (semi-metalic)
Nothing else. Vibration gone.
51K on former pads. Nothing done to rotors.
Vibration on stopping was worse when brakes were hot.
Had a Chrysler 300M that had rotors go every 25K ...oh that's right
Chrysler...never mind.




In article <Sdjlb.142099$pl3.105825@pd7tw3no>, ca says... 

On Tue, 21 Oct 2003 22:50:17 GMT, "Dave Null Sr." <com>
wrote:
 

Interesting article, wonder why he didn't mention wheel torque?

Father Guido
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
I plan on living forever... so far, so good

My 2k Outback had warped rotors due to overtightening wheel lug nuts. Had
the rotors turned myself at 50K and put the best pads on I could find....I
used my own torque wrench this time around....I will never let a shop
tighten them again!...BUY A TORQUE WRENCH!!!


"Jerry C Shaw" <net> wrote in message
news:KOclb.601190$.. 
known 
before