i recently developed a problem. after 10-20 mins. driving i get a sensation like an unbalanced wheel, can be light or pronounced. slight shake in steering wheel, persists at low speed, i can feel it in the brake pedal. settles when car parked and cooled off. mechanics first try was to ensure rotor was true and service calipers. he may have said it was localized to one front wheel but i'm not sure. could it be abs sensor, module, pump or something else. any ideas ?

 

Front wheel bearing?

 

im betting its not a wheel bearing. it only comes on after about 15 min. it is a rythmic pulsing with frequency independent of speed.i may try removing abs fuse.thx.

 

These things will normally display an ABS light at the slightest provocation.

Could be a brake piston 'grabbing' in the caliper bore when it heats up.

Graham