Break Disk Issue

[baka]

Sticky caliper that used to work in the range it was in, but now the pistons are sitting back on new pads and disks they are sticky.

This causes the pad and disk to remain hot while the other side cools down.

That, in turn, causes grab when you apply the brakes, It is gone in a split second as the other disk heats up.

In my old A4 this was OK in the dry but would threaten you with a lane change at motorway speeds in the wet. Below 40 it was hardly noticeable.

The cure is to refurbish or replace the affected caliper (usually nearside front).

Yarp, the part of the brake piston that used to project from the caliper body, when you had thinner disks and pads. Is now the part of the piston working against the brake seals and could be sticking due to dirt or pitting on the piston. It could also be sticky/sh!tty slide pins on a sliding caliper.

[james2]

Easy way to find the fault is jack a wheel up one at a time and spin it by hand to see if its binding. Its a common problem on mk4. Starter motors, wipers brakes and horn ect..........

[xxpenxx]

Easy way to find the fault is jack a wheel up one at a time and spin it by hand to see if its binding. Its a common problem on mk4. Starter motors, wipers brakes and horn ect..........

That wouldn't help sadly mate, only really happens when over 40mph. So would be abit hard spinning that wheel 40mph lol

[baka]

Easy way to find the fault is jack a wheel up one at a time and spin it by hand to see if its binding. Its a common problem on mk4. Starter motors, wipers brakes and horn ect..........

That wouldn't help sadly mate, only really happens when over 40mph. So would be abit hard spinning that wheel 40mph lol

The drag of the binding caliper might only be apparent over 40mph when it's got the inertia of a 1250kg Golf pushing it along. Try moving it with just your arm and you might spot it a bit easier. 

[xxpenxx]

Taking it to the garage now. Will be sorted regardless lol. Cheers guys.