That's good to know as after 6 months / year the wheels do get dirty inside particularly and harder to clean.nigelmwilliams7 wrote: ↑Tue Mar 28, 2017 3:37 pmIf they are bad try Valet Pro Dragon's Breath, and leave for 5 mins, agitate and then wash off.
Valet Pro's Bilberry is good for regular cleans.
The best way to keep alloys (and even brake calipers) clean in the long term is Gtechniq C5 Wheel Armour.
As a sidenote and testimony to this product, I had to have an alloy on my previous car refurbed and even after 4 years they rung to ask what I had treated them with as they were having issues getting paint to bond
My car is literally just getting done with wheels off and full treatment with the GTechniq so will see how it goes.