I have recently purchased a set of Wheel Wollies to clean especially the back wheels of the 911. That are quite expensive around the £40 mark including postage for the three brush set, but do the job well and reach inside the wheel well.. Someone from the 991 Club recommended them to me. If someone is interested, here is the link where to purchase them. http://www.theultimatefinish.co.uk/uf/luxury-wheel-woolies.aspx?utm_source=Google&utm_medium=shopping&utm_campaign=MerchantCentre&variant=6664&gclid=Cj0KEQiA-ZSzBRDp3ITHm5KO_JYBEiQA1JjHHLKZfF3v0QV_YRLyuhyGLQHRGSVeXztNlvibj60hPXsaAkgs8P8HAQ
HJ
HJ