MOT question on brakes

Will the disco pass an mot with a vented disc on nearside front and a solid disc on offside front?
Braking is not affected at all.
Only difference is that the vented disc runs about 50% cooler after heavy braking.

ta

Different discs on the same axel OMG

pauli said:

Different discs on the same axel OMG

Click to expand...

no safety pronblem as they both have the same friction area, same pads and same calipers except with a spacer, the disco dosent pull to one side even under heavy braking so what's the worry?

I beg to differ (unless someone knows better )
As the discs heat up the vented one will brake better and cause an unbalance
When it comes to brakes why take chances
Fit two new vented discs and new pads and no worries

pauli said:

I beg to differ (unless someone knows better )
As the discs heat up the vented one will brake better and cause an unbalance

Click to expand...

Why does it not pull to one side then even with hands off steering wheel?

if the tester notices it will be a fail

bmp42 said:

if the tester notices it will be a fail

Click to expand...

Is that definate? if so I will put the other vented disc and caliper on.

Why don't you take it and see, if it fails, stick the new brakes on and get it re-tested?

If they heat up it will pull-cost of discs and pads in not high
Why take the risk

bmp42 said:

if the tester notices it will be a fail

Click to expand...

What would he fail it on?

werent ya sold a set of discs?Just replace both at the same time.

oldskool said:

What would he fail it on?

Click to expand...

MOT UK car and vehicle MOT information equipment car servicing parts and spares - brake components wouldnt unless the mot dude was being an arse 1h pitted or worn.

landowner said:

Why does it not pull to one side then even with hands off steering wheel?

Click to expand...

It'll probably wait until you have your whole family in the car and you're least expecting it too before doing it! As pauli has already said why take the risk with something as important as brakes?

wasn't that one of the faults on Gresham's landy?

goonarmy said:

MOT UK car and vehicle MOT information equipment car servicing parts and spares - brake components wouldnt unless the mot dude was being an arse 1h pitted or worn.

Click to expand...

I know you can't fail it for that cos i is a tester, just wondered what bmp42 thought it would fail on. I would pass and advise

smarty1972 said:

It'll probably wait until you have your whole family in the car and you're least expecting it too before doing it! As pauli has already said why take the risk with something as important as brakes?

Click to expand...

To get to brake-fade temperature, you gotta be stopping pretty hard so yes, as smarty1972 said - trailer on or full load, downhill stopping = brown pants time:doh:

davek0974 said:

To get to brake-fade temperature, you gotta be stopping pretty hard so yes, as smarty1972 said - trailer on or full load, downhill stopping = brown pants time:doh:

Click to expand...

Trailer shouldn't make much if any difference if the trailer brakes are working propperly

This calls for a:

"it's not wrong, but you just don't do it" moment.

Vented on road, solid off road.

Do you keep one wheel in the gutter all the time?

Good practice to run a pair of matched discs mate, same with Tyres.

Cheers.

oldskool said:

Trailer shouldn't make much if any difference if the trailer brakes are working propperly

Click to expand...

Yes but........

What if only one of the trailer brakes were vented too???

Treworgey 90 said:

wasn't that one of the faults on Gresham's landy?

Click to expand...

i think it was cos i was reading about it the other day , very sad