the car in question is A4 1.6i from 1995
it all started with strange noice from rear driver-side tire
i was driving it for several days before i've gone to service
and there I saw the problem
the braking pads on the rear driver-side tire were completly
blocked on the braking disk, so the whole wheal was not turning,
what did suprise me was the fact that on the passinger side (rear)
the pads did not brake at all. They looked brand new.
The service replaced brake pads (audi original) and refited them,
now everything seems to be ok.

Question : ???How can this problem emerge??? Is something like this
problem freqvent??? Possibility to happen again???

Solution in authorised Audi service is around 100 euro (only rear pads
replaced)

Thanks...
D.> D.>