I have been noticing quite a lot of P5 owners using the Cooper lifeliner tryes.
With modest use they will get dirty and appear yellow. There are various products which you can buy to clean some of which work better than others.
Now my simple cheap and effective tip is to use an old cream cleaner like Jif and a scouring sponge with the abrasive pad on.
I use one which has done a few dishes as it softens the pad until it is not as harsh. used the sponge on the white band and if there is any stuborn marks or you want to give it a deep clean use the scouring pad.
Thanks for that tip Colin, the specialist cleaners are effective but costly, and not always readily available.
On the subject of tyre cleaning, can anyone advise the chemistry involved in these products? I have always been amazed how a dull, dirty, grey /brown tyre can be turned into a clean, semi-matt black tyre using something such as Armorall Tyre Foam. After using this on my daily driver last time I let the foam subside as usual, only to notice that 4 damp patches appeared on the road surface where the surplus had drained off the sidewalls. When these patches dried, I had 4 black patches of tarmac on the otherwise grey road!
So does Armorall clean and shine tarmac as well as tyres, or has the blackness of my tyres been transferred to the tarmac?