Continental Contact CST17 is a summer tyre made in total of 37 sizes, ranging from R15 to R15 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. is 10mm wider than the narrowest dimension (115) and 40mm narrower than the widest one (165). This tyre profile of 90 means the sidewall height of the tyre is 90% of the tyre width (125mm), which results in 112.5mm sidewall height. In , there is only one possible speed index for Continental Contact CST17 - "M", which is good for speeds up to km/h.