The tyres in size 235/40 R18 are designed for passenger cars of a sports character. Number 235 at the beginning of the size is the tyre's tread width expressed in millimetres. The next number is the tyre's profile height which amounts 40% out of 235 millimetres of the tyre's tread width. The "R" denotes the radial construction of the tyre. Number 18 is the diameter of the wheel's rim in inches which can be installed with the tyre in size 235/40 R18. Are you searching for a suitable tyre model in size 235/40 R18? Check out our offer and choose something for yourself.