Minimum brake disc thickness

Does anyone know the minimum thickness for the front discs on a 2012 Boxer?
- or has anyone found a website that lists this specification?

After a long search I've found plenty of references to the importance of replacing disks when they get to the minimum, but no-one seems to say what it is!

Thanks in advance...

Check this website, measurements given for solid or vented discs...

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Having just replaced our front disks, I was surprised how many different thicknesses are available to buy and how badly corroded the rear face of the discs were, when I removed them.

Paulmold wrote:Check this website, measurements given for solid or vented discs...
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Thanks, brilliant!  
That's not exactly our van but I quickly found the right one.  There is a choice of sizes but only one is the same size as currently on our vehicle: I have read comments about increasing the rotor size for improved braking but I think I'll stick with the original size.
Vented Diameter: 280.0 Thickness: 24.0 Minimum Thickness: 21.9
...which makes our old discs just under the minimum so we'll change those at the same time as the pads.

Angus

I wouldn't bother about minimum thickness, just replace them if in doubt. Around £80 for a pair of vented discs and pads.
 I've not had to replace pads often, but when I do I also fit new discs. 
Al.

bikeralw wrote:I wouldn't bother about minimum thickness, just replace them if in doubt. Around £80 for a pair of vented discs and pads.
 I've not had to replace pads often, but when I do I also fit new discs. 
Al.

Fair comment, but "if in doubt" needs a bit of expertise I think.  Our disks look ok, no cracking or discolouration, and no scoring.  So I wouldn't necessarily feel they had to be replaced - until I measured the thickness.   No doubt now!
This is the first set of new pads, I haven't found discs worn below spec by a single set of pads before - must have been hard wearing pads.
Angus

It is my understanding that brake pads are now more eco friendly (no asbestos or similar?) and are harder, thus wear the discs more. I have always been reluctant to change discs even if scored (in the belief that the pads will bed to the discs) but I am not so sure anymore. Certainly if heavily corroded they will need replacing because pitting will reduce contact area and accelerate pad wear. At £80 a pair that also seems quite cheap!