disc skimming

[SGHOM]

I've just had a qoute of £10 each, to get my rusty EVO 8 discs all shiney again !! just skimming, not grinding, seems reasonable ??

[Roadrunner]

Yep, I reckon that's OK. I was £30 to get all four skimmed.

[ANTHONY]

is this worth getting done or are new discs better in the long run?

[WildCards]

If your discs aren't warped then I don't see what this acheives. All discs go rusty without use, usually a couple of stops will remove the rust and they'll be fine afterwards. If you're really bothered take them off yourself and wire brush them.

[Roberto]

For me skimming is more for removing the lip rather than any rust.

If you put new pads on they might be slightly larger than the warn down area, and could wear even faster because of it.

[ANTHONY]

mine have a few score marks proberly from a stone or grit

[WildCards]

Oh I see, although if the lip is too big it may mean the disc is too thin and should be replaced anyway.

[Subaru ETA]

Skimming the rotors also makes the new pad bed in better

[Kitty's VR4]

If there are lips on the rotors, I'd be checking there thicknessess. There is a minimum recommended thickness for rotors, also with this measurement make sure there is enough servicable meat left on the rotor to allow machining... No point machining them if they finish up under recommended thickness....

Standard VR4 rotors are:
Front New 24mm thick - Used minimum 22.4mm
Rear New 20mm thick - Used minimum 18.4mm

Brembo rotors are:
Front New 32mm thick - Used minimum 29.8mm
Rear New 22mm thick - Used minimum 20mm

[Nick Mann]

Got to agree with Kitty's there. 1.6mm of removed metal gives a lip of 0.8mm on each side. (It never works that cleanly, but you get the idea.) If it's much less than 0.8 it's not worth worrying about and if it is that big, are your discs still thick enough?

Plus, most people on here use agressive/hard pads, which will wear out discs quickly. In some cases, faster than the pads! So in my opinion, hard pads + a significant lip = change discs.

[ritch_w]

I was quoted £50 a disc last time - ended up buying new ones instead....

[ANTHONY]

I was quoted £50 a disc last time - ended up buying new ones instead....

i make you right.thats dearer then a set from camskill