This corresponds to a total diameter of 68.2cm. (corresponds almost exactly to the total diameter of the 19″ with 225/45). Whether you get 225/55 (with tacho adjustment, total diameter 70.5cm) by individual acceptance or are the approx. +2cm mechanically problematic in the wheel box? 235/50 would be more suitable with 69.2cm but on a 7″ wide rim this is a very rare dimension.