Mine were pretty bad, I used valet pro billberry acid free cleaner, And had to resort to wonder wheels too, then on the stuff that didn't shift Tardis tar remover and then more or the wonder wheels

still not 100% but need to take them off and sort with some strong clay and buff the areas I have marred by scrubbing to much with a auto glym stiff wheel brush.

Go acid free, then limited doses of acid cleaner if not budging

sonax extreme wheel cleaner would be a good choice as designed for burnt on dust

Cheers - will look into it

one of the best sealents i've used is from planet polish called wheel seal and shine here

much easier to apply and remove than the poorboys stuff, and has definitely got good life, with great beading.

if brake dust is really excessive, you can use a mild percentage hydroflouric acid, which will remove all staining and will not attack the metal.

Washed and polished mine today, even took all of the wheels off and polished and sealed them. Would have given the car a coat of extra Gloss Protection or wax but it started to rain! WINNER - 2009 ‘Just Doing What It’s Designed To Do’ Award

2010 TDV8 HSE Galway Green - Adaptive Cruise - Sunroof - Privacy Glass - 5 Spoke Alloys
2009 TDV6 3.0 HSE Buckingham Blue - GONE