assuming from your statement that it is a four-wheel disc brake
vehicle? If so, there may be an adjustment for the rear calipers to
keep just enough clearance for the hand brake to lock the rear discs
when applied. If too tight, they will drag when warmed up and
eventually overheat, crack and fail to assist in stopping the vehicle.
Jim O'Neill - Chino Autotech Inc., Auto Club SoCal AAR