brake pads

Agree Keith

Removing metal from discs removes some of their heat absorption and dissipation capacity.
Disc machining is necessary to remove warpage and disc thickness variation but machining discs every time pads are fitted has never been demonstrated as technically necessary. (makes them look shiny though) The practice seemed to develop in direct relationship to the number of disc lathes that became available.
If you really want to stir things, ask why discs are being machines with a lathe tool instead of being ground.

regards

A

i agree with that line of thought.

Neville.
I don't bother at all with the machining of discs when if you get a price on new rotors the price difference is you will find minimal.
And as Andrew has stated the heat dissapation can sometimes be an issue.
Cheers
Paul

Hi Nev, I don't remember what brand but you can get 4wd pads with a thin abrasive strip across the middle that cleans up the surface of your rotors.

Cheers
Neil

I'kl see if I can get more info on these 4wd pads

Hi Nev, should be able to pick up a set of pads for around $50-80 a set, the best way to see if the discs need machining beside the obvious scoring damage is whilst at highway speed apply the brakes ( light-medium pressure) and if there is type of shudder thru the vehicle or a pulsing of the brake pedal they are warped and will need machining or replacing. My last troopy had over 400,000kms on it and still had the original discs with no shudder evident but at the last rego check the disc thickness was getting at the lower and of the scale and would have needed replacing at the next pad change. I was always advised not to use the metal type pads because they wear out discs a lot quicker which is probably why I got such good life out of the discs.This troopy was used as a commercial tour vehicle which towed a heavy offroad trailer so did get a good work out..depending on whos doing the job and if all is well with the caliper slides and pistons should only take a good mechanic half hour or so.(2 wheels)

G'day edwin I've had 5 toyota's & 2 patrols ,never had problems with the discs driving threw lots of creeks , rivers even in the snowy region in winter shows the quality of their product. I had one disco and the first river I drove across in the kimberly region the discs buckled never had trouble with a toyo in the same spot.