Front Disc Wear Limit

[viking]

The MOT is due soon, Last year the MOT inspector pointed out that the front discs are worn and will need replacement by next year ! . I gave it a service last weekend. According to Haynes new discs are 25mm thick. Wear limit 21mm. Ckecked both discs with a micrometer, thinest measurement was 23.5 mm. Can anyone confirm what the wear limit is ?

[sparky Paul]

The MOT is due soon, Last year the MOT inspector pointed out that the front discs are worn and will need replacement by next year ! . I gave it a service last weekend. According to Haynes new discs are 25mm thick. Wear limit 21mm. Ckecked both discs with a micrometer, thinest measurement was 23.5 mm. Can anyone confirm what the wear limit is ?

 

Yes, limit is 21mm - it's often stamped on the discs somewhere.

 

Unless there are other problems with the discs, e.g. corrosion, scoring, etc., I wouldn't touch them.

[viking]

Thanks for the reply. It's nice to be fore armed with correct info when dealing with

garages, some can be trusted but a lot are out there trying to make a quick buck !

Checked the disc and sure enough stamped into the hub is minimum thickness in imperial and metric.