Dunlop Grandtrek AT3 215/75 R15

Dunlop Grandtrek AT3 is a winter tyre made in total of 20 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 215/75 R15 is 10mm wider than the narrowest dimension (205) and 60mm narrower than the widest one (275). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (215mm), which results in 161.25mm sidewall height.