not sure why but my wheels seem to get very browny yelloy these days, my discs and pads are fine and have plenty of life left and MOT clear, might be as they are old more dust coming off them, pretty sure new discs pads produce less.
Anyway washing just does not remove this (hence my other top tip post), I've now got some Bilberry and sprayed it on today at 1:3 dilution, you can use is neat too. It seems to do the job very well and clean the wheels much better when I wash them after 5 mins with the Bilberry on.

Bilberry is supposed to be very good, I haven't tried it yet but it's on my list.
Valet Pro products seem to be pretty good and don't cost a lot.

Have you got wheel sealant on them as that helps a lot? I use Poor Boys.
Glad I got the wheels refurbed in a colour that hides the dirt.

Is good stuff and use it all the time, but be careful using it neat, never forget when I done it on my rs wheels started to strip the paint off

I've got some but rarely use it, now and then I just polish them with a cloth soaked in spray wax.

ok noted

Bilberry is my favorite remedy. I can clean dirt and soot from discs only with it