A3 noisy gearbox?

[Dooperdat]

Hi, I’m a new member seeking, any advice please,  regarding a grating/grinding sound I’m getting (particularly at low speed) which appears to lessen as the engine warms up. (I think the sound is like brakes when they are worn down). The noise corresponds with the revolution of the wheels……a friend has suggested gearbox issue. Any advice/ help would be greatly appreciated, as I am not mechanically minder. My car is a 2009, 1.8 SE automatic and has 62,000 miles. Many thanks for any help out there. Kindest regards. Steve

[Steve Q]

Could be a sticking caliper piston. One way to tell if you have a sticking piston that keeps the brake pads rubbing on the disc is when youve parked up after a drive see if you can feel excess heat coming from any brake disc more than the others