just one very fast bump when pressing hard
notice it more when car is hot or very hot weather like today ( 35º )
(does ABS kicks in even on a dry/flat/good road at 50 or 60 ? )
found this from mazda:
Subject:
FRONT BRAKE CLUNKING NOISE
Bulletin No:
06/13/2006
Service Bulletin
Mazda North American Operations
Irvine, CA 92618-2922
2000
DESCRIPTION
When braking in a forward direction, then changing direction and braking in reverse, a clunk noise may be
heard from the front brakes. This condition is most noticeable when the vehicle is moving forward, then backwards
a short distance while applying the brakes in both directions. This may be caused by excessive clearance
between the brake pad and caliper support, resulting in a clunk noise.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify customer concern.
2. Remove front brake pads and shims from caliper.
CAUTION:
Avoid damage or deformation of existing shims because they will be re-used.
3. Preassemble modified pads with existing shims.
NOTE: Replace brake pads only, original shims must be re-used
maybe replacing pads will work , problem isnt exactly what i experience but its realted i think