2004 R300K on 6"x13 front and 8"x13 rear all on 8 spoke anthracites. I run 3x wheel nuts and one locking wheel nut per corner. I changed the wheels today ahead of reduced use of the Seven over the autumn and winter, putting on the spare set of wheels with CR500s to replace the Avon ZZSs which took a bit of a mauling at the Brands trackday last month. One of the wheel nut collars on the offside rear refused to part from the wheel which inspired three on the nearside rear to steadfastly refuse to budge. Thankfully, I have some spare wheel nuts and collars. I've done what seemed to be obvious at the time and liberally sprayed the refuseniks with WD40, but cannot see how to get any purchase on the blighters to persuade them to come out. Any ideas? Peter