davesan1

iTrader: (4)

I've had the car from new and ever since I had it the front brake rotors have needed skimming every 5,000 to 8,000 miles. Of course, this also means the rotors need replacing after each 2nd or 3rd skimming.

Happens on both front wheels, and, as likely expected, never the back ones

I have always used stock rotors and stock brake pads

The car is a very early '93 model

I don't do track driving. However, I do drive fairly hard, but I have several buddies with the same car and same driving habits that have no rotor warping problems. Of course, even when the car was in warranty, I got no sense from the dealer - they just changed 'em out (for free). However, now it’s my nickel, to say nothing of the inconvenience.

The only difference seems to be that my buddies’ cars are a '94 year or beyond. So I'm wondering, does anybody know of a change to the rotor, (thickness, for example), that Mazda may have made early in the gen3's life? Anyone else have this problem? Anyone solved it? Do aftermarket rotors do a better job in this respect? Are the rotors the same part for all gen3 model years?

Many questions, but the bottom line is that I want to fix it without making any major mod to the car. I'm coming up to a re-skim, (or more likely this time it will be a rotor replacement due to skim-down-caused “rotor-too-thin” syndrome. Any advice would be much appreciated.

rynberg

There is no such thing as warped rotors. It's a myth. What is occuring is you are not bedding your pads properly.

Read here:
http://www.stoptech.com/whitepapers/...otors_myth.htm

And, no there were no pad/caliper/rotor changes during the years.

Louis M

btw, you'd get better luck in the suspension/wheels/brakes section

davesan1

iTrader: (4)

Rynberg - Thanks for the input. Interesting stuff! BTW, if you know, any idea as to the best buy to replace the rotors - I feel I will need to replace them this tiime. Also, how about pads?

Louis M - Good idea!! Just did. Don't use the forum so often so I get excited and make errors! Thanks for pointing it out!

rynberg

Just get some Brembo/Iksuta solid discs. You can get them for $60/each.

If you want to improve the looks and "pad bite", you could get some slotted rotors (Powerslot for example).

As far as pads, I would just get some Hawk HPS. They are great street pads and are cheap to boot. If you want to do some occasional track work, get the Hawk HP+. They are a little noisy at times and they are harder on the rotors but you can invoke the ABS at highway speeds and they don't fade as bad as the HPS do on the road course.

davesan1

iTrader: (4)

Rynberg-

Thanks for the info. Appreciate it

hondahater

iTrader: (2)

how are they not warped if you can bring just the rotors to a brake place and have them shaved?

rynberg

Did you read the link I posted? No. If you did, you would know the answer....

mad_7tist

rynberg unparell would be more acurate but warped sends the same message. put a dial indicator on a rotor that pulsates when braking and it will show run-out. on the car lathes are better at eliminating this than the old syle lathes.

rynberg

They're not warped. Read the link.