chris424

Hi,

I bought my RX8 40th anniversary edition 6 months ago and after driving from Glasgow to London and back again (roughly 850 miles), on the way back when I was pulling out of the service station after re-fueling I heard a horrible grinding noise from the back of the car.

Got this checked tonight and my rear brake pads/discs have worn down. Now that I think of it, on the way down to London the brakes were stuttering when I pressed them.

Now, I'm trying to figure out how this could've happened so fast... the car was serviced and passed an MOT 6 months ago - and now the pads/discs are worn? Any idea why this could be? Unless they were worn down when I bought the car.

Any input would be appreciated. Thanks.

RIWWP

iTrader: (2)

2 simple explanations possible:

1) Your MOT inspection passed the pads when they shouldn't have been, so they didn't actually wear much in your ownership, they just went from critical to gone, not new to gone. If both rears are about equal inner vs outer, left vs right, then this is most likely the reason.

or

2) You have a frozen caliper, which unbalanced the inner/outer brake pad balance and/or jammed one pad against the rotor enough to be wearing even when you weren't using the brakes. Mazda rear calipers are known for seizing easily. If you have a clear difference of pad material inner vs outer on that side, or that side having much less material than the other side of the car, then this is most likely what happened.


There are a few other exotic answers too, but i'd deal with these two first.