Had young Grain Ben round today, bit of a knock, bit of tyre wear, concerns over loose wishbone bolts and a general look over the suspension, prior to set up and new tyres.
Rearward wishbone bush failed but not enough to cause a knock. So what's causing the (slight) knock...?
Well, its coming from the pas side.
With car on stands, thump the drivers road wheel with a closed hand and there's no noise other than reverberation through the suspension. Pas side however, and there's a clank. Foot in brake, no clank. So wheel off, check caliper, there's play and a wobble.
Caliper off, check the pins for play, lower ones had a fair bit of play. Check the pads, pattern parts. These have no rubber sticker on one pad like tc ones have. Ie both pad backs are bare metal.
So conclude, pin wear and no rubber sticker on the pad back is allowing the caliper to knock slightly over bumps. Also, tc pads should be fitted with the brake pad with rubber sticker on the outboard clipper side (as opposed to against the piston)
Point? Fit genuine parts.
