Just got a nasty bill, $417 for two new front rotors for an AWD. They are double the normal price. The guys said I had 'hot spots' (3), at 12, 3 and 6 o'clock on the disc, and that they wouldn't machine out, resulting in vibration on braking. True enough, I've noticed that. Should I have gone through with it? I've never heard of this in my life, nor has anyone I know. It was a hire car before I bought it (low km though ~25k), so it would have had a hard life.

Are you sure the bill didn't include new pads? Sounds about right for disks and pads. Unless someone had it on the track .... hire car - possible.... I seriously doubt its hot spots - more likely given the 12/3/6 thing its badly tightenend nuts - a chronic problem with badly serviced magnas and a sure fire way to warp the disks. Correct torque on the mags is 90-100 NM, which is the old 75lbs per foot - not very tight really.

seems pretty excessive for just rotors. DBA slotted rotors are around $120each.

seems about right.

id say 2hours labour at $80ph = $160

$420-160 = $260 / 2 = $130perside

about right if he did pads aswell

i recently put my awd rotors in the garbage the were rooted you could actualy see the "hotspots"

swaped to rda slotted :doubt:

get some dba 4000 series on there...

it happen due to the high load and heat

I had hot spots on my KH.
You could actually see them. They look like blue/purple spots on the disc.
Usually caused by crappy pads i.e. factory pads after you give them a hard time and boil the discs.

Wont happen with good pads.

Yeah, AWD discs are a fair bit more expensive than FWD.

Usually caused by crappy pads i.e. factory pads after you give them a hard time and boil the discs.


yeah I fried mine last year (sunny coast cruise) :redface: At 20 or 30 km/h with the brakes slightly depressed you can feel the hot spots pass under the pads. Which is a good excuse for me to get dba rotors once i get my new rims:badgrin:

Cheers everyone. I think the costs were normal enough (they changed the pads, but I supplied the pads, new mitsubishi pads). Midas Haberfield did it, they are a good bunch. I've had recomendations of them from my neighbours, and people on here



Are you sure the bill didn't include new pads? Sounds about right for disks and pads. Unless someone had it on the track .... hire car - possible.... I seriously doubt its hot spots - more likely given the 12/3/6 thing its badly tightenend nuts - a chronic problem with badly serviced magnas and a sure fire way to warp the disks. Correct torque on the mags is 90-100 NM, which is the old 75lbs per foot - not very tight really.

Interesting! I've done two big trips under heavy load. ~8000km in a month around Tassie with three heffers in the car and camping gear (back was heavily weighed down). When I moved from Adelaide, the car was very heavily loaded. And I came down Macquarie pass, then up bulli pass. Oops! You could see the marks on the discs. They've been there for ages, and they don't wear off. I;ve done 80K km, so I should expect some wear and tear

The discs seems thicker than the old one. Can't really be the case though. Is this just an issue with Ralliart/AWD front brakes, or all magnas?