New Discs ?
 

How do you no if you need new discs are there any signs
Thanks Neil

Mine click every now and again,and there's a bit of feedback through steering wheel when braking....:)

Usually noise, mine squeaking like mad at just about any speed and shaking of the steering wheel under braking.

technically everything else being in good working order its simply down to min. thickness.............................

alyn

When i rub my finger on the disc there is a ridge at the edge is this a problem
Thanks Neil

yes this wont help, that is where the pads have worn an edge to the disc over a long period of time, if you get really bad shaking through the steering wheel when braking and sometimes when not braking depending on how bad it is, that is the discs warped and in need of changing quickly.

The edge is just from gradual wear, depends on how bad it is

The only real way to tell is as Alyn says: thickness.

You'll need to know the minimum thickness allowed, and have access to a micrometer. A vernier gauge won't do as the lip worn on the edge will give a fake reading.

Alcazar

Thanks, No shaking so think they will be ok. When i do change what do you recomend for a 1996 sti ra with 16inch volks, Ihave not got grooved or drilled would these be better
Thanks Neil