I recently purchased my c max 2.0 tdci ghia and at the same time treated myself to some 18'' ST rims. Although the wheels look spot on they are giving me a big headache!! After fitting them i was getting a shake in the steering wheel at around 70 mph so i took it to my mates garage and he balanced the wheels which were slightly out and i thought that may have solved the problem.....WRONG!!!! I have been advised that the problem may be because there are no spiggots fitted between the hub and wheel? Anyone got any ideas??