Brakes: 70: - MOT regulations brake discs

OvlovS70 · Nov 7th, 2013, 13:30

Hello,
Is it fine to fit drilled/grooved brake discs without any impact on MOT regulations? Or does it open up issues?
Cheers

yeti76 · Nov 7th, 2013, 14:39

Shouldn't make any issues on MOT. They would check warping and disc thicknes only.

I'd personally go for drilled as they dissipate the heat better apparently. Both grooved and drilled both increase friction and also reduce brake pad resin build up (if you have an automatic gearbox and tend to be glazing the pads in slow traffic all the time, you may well notice a difference).

Popular belief is that drilled and grooved brakes disperse water better. Apparently not enough to really make any significant difference at all.

byootox · Nov 7th, 2013, 23:22

There is no issues with fitting these for mot purposes as long as there fitted correctly, same as normal discs really and giving a good brake.

Nov 7th, 2013, 13:30	#1
OvlovS70 Still a learning member Last Online: Aug 17th, 2022 18:49 Join Date: Apr 2012 Location: Ayrshire	MOT regulations brake discs Hello, Is it fine to fit drilled/grooved brake discs without any impact on MOT regulations? Or does it open up issues? Cheers

Nov 7th, 2013, 14:39	#2
yeti76 Member Last Online: May 17th, 2014 08:40 Join Date: Oct 2010 Location: Kingston-upon-Hull	Shouldn't make any issues on MOT. They would check warping and disc thicknes only. I'd personally go for drilled as they dissipate the heat better apparently. Both grooved and drilled both increase friction and also reduce brake pad resin build up (if you have an automatic gearbox and tend to be glazing the pads in slow traffic all the time, you may well notice a difference). Popular belief is that drilled and grooved brakes disperse water better. Apparently not enough to really make any significant difference at all.

Nov 7th, 2013, 23:22	#3
byootox Premier Member Last Online: Dec 20th, 2021 23:22 Join Date: Oct 2012 Location: Edinburgh	There is no issues with fitting these for mot purposes as long as there fitted correctly, same as normal discs really and giving a good brake.

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