Join Date: Apr 2008
Location: Shepperton, Middlesex
Wonder Wheels is based on an acidic formulation used for cleaning brickwork and concrete. I think the newer variants use an alkaline formula which again can corrode.
Citrus Degreaser should be available from your local cleaning suppliers. I buy 5 litres for £8.00 and dilute it 6:1 with water so you'll end up with 30 lires plus. It can also be used for lower sills, engine bay, upholstry and carpets aswell as wheels.