Brake disc issues

[TwoSheds]

Or take it to a quiet road/large car park and go from 20-0 a few times using just the electronic handbrake. I'm not sure how safe this is but it should clear them up.

Don't do this, the result with doing that will be instant rear wheel lock up. It is instant on at 20mph, believe me I have tried.

Thats because its an emergency braking function if the foot brake fails..

[dereks]

Mines are also gone at 26k the problem with rear brakes is they don't get used enough so they corrode then when the brakes are used the rust ends up scoring the discs.

Hard use of the brakes often is best.

[itavaltalainen]

Or take it to a quiet road/large car park and go from 20-0 a few times using just the electronic handbrake. I'm not sure how safe this is but it should clear them up.

Don't do this, the result with doing that will be instant rear wheel lock up. It is instant on at 20mph, believe me I have tried.

Thats because its an emergency braking function if the foot brake fails..

Nope, it will not lock them up at 20mph, at that speed it uses the hydraulic brakes (all 4). Only at very low speeds will it engage the EPB (as in apply rear parking brake).