If you got the 5 spoke aluminum wheels you can probably see the brake
wear sqeaker and how close it is to the rotor.
Just drive the car forward till you can see the upper part of the brake
A simple inspection will determine if you need brakes. I bought my car
in Feb 1991 and replaced the front brakes in Nov 1992 at 43,289 miles.
The original ( drum ) rear brakes were replaced in Aug 1997 at 125,000
Brake life is shorter if you drive fast & brake hard.
My uncles 94 Century has about 75,000 on the original front & rear
brakes, but he barely dives over 25 mph and does alot of coasting up to
the insections with little or no braking.
1991 Pontiac Bonneville LE