Yes, you do need one. You may be able to borrow it from your local
Autozone/PepBoys. BTW, the rotors will always begin to rust where the pads
do not touch the surface. Do not judge a rotor by this method. What makes
you think their warped? Try coasting in a parking lot and applying the
parking brake. Do you feel anything or is it smooth?

--Andy

"Rob Guenther" > wrote in message
.. .
> Hello group.
>
> Apparently I need new rear rotors - corrosion is getting pretty bad, and
> actually spreading down the rotor where the pad doesn't touch, and they
> are slightly warped I believe... The pads were done at 60K Kms (car has
> 109K Kms now) and have plenty of life on them, but I know they need to be
> changed if I get new rotors.
>
> Friend of mine who did my fronts said I don't need special tools to do the
> rear rotors, I seem to recall needing a special retractor tool to
> push/turn the pistons back into the calipers on the rear brakes on VW's.
>
> I'd like to install Zimmerman rotors and PBR pads like I have up front
> (done at around 90K Kms just before this summer), and do them myself - as
> I like the way the front brakes improved when I changed from stock.
>