Just a quick one,

When you change your discs on your brakes, why is it you have to replace the pads at the same time? Say for example you change the pads at some point then a while later you find the discs are corroded etc and perhaps need replacing, the pads still have loads of life left in them, why must you fit fresh ones? Is it just best practice?

The area the pads cover will be the same on new discs as on the old ones so surely it's false economy to replace them if not needed?

The only reason that springs to mind is that you may damage the pads when you pull the caliper off the disc and the pads catch on the lip of the worn disc as it comes away.

Thanks,

Chris.

Pads wear and form the shape of the old disks, generally this is not uniform wear and hence often the reason why the disks are being changed.

Fitting new disks with used pads may result in reduced braking efficiency.