A word of advice. Just make sure that the liner is well clear of the tyre. It is surprising how much the rear wheels move up and down. Unfortunately, I didn't, and todays little job is to replace the rears with some new ones.
As Neil says it is important to ensure the liners are no more than 15mm from the actual wheel arch or you risk tyre scrub on the liners.
Adrian
Buggered Off, to a modern none leaky car, heart's still ticking