Continental ContiSportContact 5 is a summer tyre made in total of 60 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 20mm wider than the narrowest dimension (205) and 50mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, there is only one possible speed index for Continental ContiSportContact 5 - "Y", which is good for speeds up to 300 km/h. Latest test in 225/40 R18 was held by SportAuto in 2017, where ContiSportContact 5 received rating "Recommended" and finished on the 4. place. It was tested on a .
