Uniroyal MS plus 77 155/80 R13

Uniroyal MS plus 77 is a winter tyre made in total of 76 sizes, ranging from R13 to R13 - this particular dimension is R13, which means it fits to a 13 inch/330.2mm diameter wheel. 155/80 R13 is 10mm wider than the narrowest dimension (145) and 100mm narrower than the widest one (255). This tyre profile of 80 means the sidewall height of the tyre is 80% of the tyre width (155mm), which results in 124mm sidewall height.