Hello, I had 205/55 r16. Now I drive in the summer 235/40 r18 and in the winter the 205/55 r16. In the car is now 205/55r16 and 1985mm roll circumference stored. Now my problem with these online computers… I have 3 stk and they say different… If I say from 205/55 r16 to 235/40 r18 say 2 no and 1 yes. So if I turn this from 235/40 r18 to 205/55 r16 say 2 yes and 1 no. With screenshots… I hope to help, thank you already