i have a 2002 sti with 28000 miles of normal driving and still under 3years old. i have been told that the front discs and pads, brembo, need changing because there is a lip on the disc. my first 97 car was sold with 45000 miles without new discs. All discs wear. how much wear would you allow bofore changing discs. i am not mean and always keep my cars fully seviced. am i being ripped off

I would be suprised if the disc is knackered. Take it somewhere to have it skimmed if its warped out of shape. Had mine done a while back and its fine again now. 21,000 miles by the way

Discs / brakes give absolutely no problems, no score marks and lip barely 1.5mm thanks will probably just have new pads

you normally only have around 1mm per side wear.....................any more and its new discs i'm afraid
don't have exact values for your car to hand at home, but can sort if you wish to call..........
alyn

02 STI is a heavier (faster?) car so I would expect it to go through brakes quicker than your old classic. Depends on pad compound as well, as some are harder on discs. Difficult to say without seeing them but I would probably advise you change them rather than skim them. Daz.

On a classic discs should not be less than 22mm thick. They start at 24mm whether small or large diameter versions so 1mm off each face as said by 'stockcar'. Essentially if you are mechancially competent you can drop a disc off in about 10 mins and thickness info should be cast into the inside face by the hub of the disc giving the minimum thickness. Else phone a dealer and ask. You'll need a micrometer or similar to measure though because of the lip.

thanks guys for your info will get a more accurate thickness with a mic but can't see engineering logic of allowing only 1mm of wear per side on a disc this thick. discs like this cannot be in danger of failure but i wonder what the mot tester would think and do they have guide lines for discs on all makes ps great result for Wales -what a weekend

The std front disc thickness is 30mm and the service limit is 28mm on the rear it's 20mm and 18mm.
Trouble is that as the disc gets thinner it gets much hotter and so failure could happen. I would change them out asap if they are 18mm or below.

Dipster

Interesting thread as I too have an STI 02 with 25k on it. Coming upto my 36 month service / MOT and have notice lips on my discs which are probably over 1mm.

Can anyone recommend good discs without the silly prices normally attached to any component with the word STI in it ???

Cheers

Neil

TSL motorsport sell DBA discs.

Dipster

Godspeed offer one piece grooved discs at £250 a pair , and 2 piece disc and bells at £395 a pair ,

take your point dipster and i take you mean failure by brake fade I will definitely change discs if you all tell me but am quite capable of doing this myself. Where can i get the best deals for subaru discs and pads ps i assume my old car is referred to as a classic daz

Your old car is referred to as a "classic" shape, and replacing discs and pads is straight forward. Failure could also mean cracking, warping or just general inefficiency. These could happen as the discs/pads get thinner and less capable of handling the heat. Daz