The tyres in size 205/40 R18 are designed for passenger cars, also for those of a sports character. Number 205 In the beginning is the exact tyre's tread width in millimetres. The next number is concerned with the tyre's profile height which amounts 40% out 205 millimetres of the tyre's tread. The "R" means that the tyre has been produced in accordance with the radial construction. The last number is the diameter of the wheel's rim in inches which can be installed with the tyre in size 205/40 R18. Check out our offer of tyres in size 205/40 R18 and choose the perfect model.