Uniroyal MS plus 77 is a winter tyre made in total of 76 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/55 R17 is 80mm wider than the narrowest dimension (145) and 30mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R17, there is only one possible speed index for Uniroyal MS plus 77 - "V", which is good for speeds up to 240 km/h. In 225/55 R17, MS plus 77 usually competes against WR Snowproof, which is a tyre from Nokian with a rating of 55%, compared to 55% of the Uniroyal in question. Latest test in 225/55 R17 was held by Autobild in 2020, where MS plus 77 received rating "Good" and finished on the 7. place. It was tested on a BMW X1.
