poacher22 12 Posted September 16, 2013 Report Share Posted September 16, 2013 Im at college cg nvq motor Vehicle and have been asked to find out what the laws are on Minimum thickness ov brake disks and how much run out is aloud on a disk so if any one can tell me i would be very Grateful Quote Link to post Share on other sites
RossM 7,979 Posted September 16, 2013 Report Share Posted September 16, 2013 minimum thickness & run out tolerance is subject to each manufacturers specification. Quote Link to post Share on other sites
tilfertilfer 706 Posted September 16, 2013 Report Share Posted September 16, 2013 pm chid mate hes the google kid he will find the aswer Quote Link to post Share on other sites
poacher22 12 Posted September 16, 2013 Author Report Share Posted September 16, 2013 Yes but my tutor said there was a Minimum thickness for all disks (eg. He said that some Manufactures Specifications on pads are as low as 1.5mm but as a Mechanic it is law to Advise a customer to change them and it was Illegal for them to be less then 3mm) Quote Link to post Share on other sites
RossM 7,979 Posted September 16, 2013 Report Share Posted September 16, 2013 The need to be below 1.5mm to fail an mot, which is a legal document I would advise pads @ 3mm but it's not legal requirement. Quote Link to post Share on other sites
Chid 6,374 Posted September 16, 2013 Report Share Posted September 16, 2013 minimum thickness varies from disc to disc , its normally stamped on the disc... run out is 6 thousands of an inch ... Quote Link to post Share on other sites
poacher22 12 Posted September 16, 2013 Author Report Share Posted September 16, 2013 minimum thickness varies from disc to disc , its normally stamped on the disc... run out is 6 thousands of an inch ... Thank you Much appreciated ? Quote Link to post Share on other sites
neil82 1,008 Posted September 16, 2013 Report Share Posted September 16, 2013 most of the time the wear limit on a vented disc works out at 2mm below new, and if your tutor is giving you that sort of incorrect bullshit over whats law then its time he retired or got a job in a kwik-fit type garage 1 Quote Link to post Share on other sites
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