boqueron

I will try to get the pictures. The rotors are looking very well...

boqueron

Well... I changed the pads and put RS29's all over. The main problem has desapeared but...

Now ...the car has blocked the wheels ( I thought that this could not happen wit ABS )in two opportunities sending me out of the track. In one of them you could clearly see the right tyre trace on the track ( it was a left turn ). When I say blocking, I mean that the steering wheel lost all control on the car, until I easied the brakes ( not having time to avoid the incidence).. Again, this tine a "pro" was sitting next to me, he thinks that the ABS did not enter.

a) The track was clean, and it was a "familiar" turn for me.
b) I braked a bit late
c) New SRF liquid
d) Perfectly beeded pads
e) The rest of the time ( 3 trac days) I had no special issues
f) The computer at my shop shows no problem with the ABS

Any clue ??

Mike K.

I had same thing happen about a year ago. Never really found out why but at the same time I was blowing grease out of the rear axles. The only thing I can suggest is to check your front camber. At the time, my shocks and springs were "bagged" and I couldn't get less than -3.4 in the front . Perhaps your tires do not work as well with the settings that the cups liked. Just a guess.

Bob Rouleau

Harry - the RS 19 ,RS 29 and RS 14 pads are compatible with each other. My guess is that your pads were not properly bedded and that they glazed over - the surface ends up with a polished finish like glass. Changing to new pads properly bedded solved the problem.

I cannot explain the failure of ABS unless perhaps the diameter of the Toyo tires are different from the Michelin Cups. If the diameter of the tires is too different front to rear, ABS will become confused. The difference front to rear should not be more than about 0.75 inches or 3 percent. Mike's comments about excessive camber is also correct but it does not explain why ABS did not function as far as I know.

Best,

boqueron

Thanks Mike and Bob.

My front camber is -2.8 which has been settled after a more aggressive camber that I had with MPSC's. As far as I know, nobody else has reported such a problem related to the Toyos...

Mike K.

Well, here's one Dealer's solution
http://i33.photobucket.com/albums/d5.../brakefade.jpg

DanH

I've had no problem with them although others find they heat up and then overheat too quick.

Not sure how much camber I have though as in the UK the two main indys won't tell you your settings (yes I know...).

Anyway at this point, I think I'd be experimenting with testing the ABS somewhere safe. See if it is working ok off track...

boqueron

Thanks, that has all been done before:OBD check ,Pads, metalic lines, Castrol SRF.

Mike K.

Some ideas:
Are you using floating rotors? ( They push pistons back)
You might try changing the brake master.
Try switching back to the Cups.
Rebuild front Calipers ( Not expensive. I have Brembo #s if you need them.)

Mike K.

Take your car to any shop with a rack and get a printout.( $25 around here) How can you adjust your car in the future or know why its doing things if you don't know what's on there.
I get a printout every few weekends just to make sure it is still in line.