Toyo Observe S944 is a winter tyre made in total of 50 sizes, ranging from R15 to R15 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 205/55 R16 is 20mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (205mm), which results in 112.75mm sidewall height. In 205/55 R16, there are 2 possible speed indexes for Toyo Observe S944 - "H","V", which are good for speeds up to 210, 240 km/h. Latest test in 205/55 R16 was held by ADAC in 2020, where Observe S944 received rating "Satisfactory" and finished on the 10. place. It was tested on a VW Golf.