The tyres in size 265/40 R18 are designed for passenger cars of a sports character. The first number in the size denotes the exact tyre's tread width (in millimetres). The next number in the second position is the tyre's profile height which amounts 40% out of 265 millimetres of the tyre's tread width. The "R" means that the tyre's producer uses the radial technology while producing the tyre. Number 18 at the end of the size is the diameter of the wheel's rim in inches on which 265/40 R18 tyre can be installed. Choose the right tyre model in size 265/40 R18.