BFGoodrich Trail Terrain T/A 275/45 R22

BFGoodrich Trail Terrain T/A is a winter tyre made in total of 49 sizes, ranging from R15 to R15 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 275/45 R22 is 40mm wider than the narrowest dimension (235) and 10mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height.