Vosa official brake roller procedure

But then... of course, even if the brakes are wildly out of balance, and the tyre grip is totally different it won't matter after next week, because if they both lock it's a pass

nitros44

I have until now run both rollers and recorded the figures at which the first roller locks, because that also trips out the other roller. I then run them individually to prove that both will lock so I can tick both boxes. I feel that this allows me to enter "true" data, At the point of the first roller locking out at 300 kgf the second roller was reading 250 Kgf so I put these figures in and come up with 16%. Then the second spin allows me to see that both wheels are capable of locking so I can honestly put 2 ticks. One may lock at 250, the other at 500 but that doesn't bother me, that's a tyre grip issue!

All this clause about spinning the wheels individually does is take the balance out of the MOT test, then the new bit about not failing if the lower reading is a lock-out stops idiots from failing brakes for imbalanced tyre grip! they've cocked it up, and now they've balanced a new cock-up on top of the old one!

Yep! it was bollox then as well baz657. But I was in a better mood then!