Hi, I've just bought a 54 plate C4 2.0 HDi VTS. I'm thinking (once I get a few problems sorted out) about upgrading the alloy wheels to after market 18" ones but was wondering what to do about the tyre pressure monitors. I believe these are transponders in the valves on the current wheels. Can I get these moved over on the new wheels? Also if the required tyre pressures are different how can I get the monitor system to change the warning levels? Thanks, Rachael