205/60-R15 tires are 0.22 inches (5.5 mm) larger in diameter than 185/65-R15 tires and the speedometer difference is 0.9%.
In the tire comparison table above, you can see a detailed calculation of the size difference between 205/75 R15 and 205/70 R15 tire. The calculation results are presented in the form of visual infographics, on which tire with size 205/75 R15 is on top, and tire with size 205/70 R15 below. Both in the table and in the graph, the tires are
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In the tire comparison table above, you can see a detailed calculation of the size difference between 235/60 R15 and 255/60 R15 tire. The calculation results are presented in the form of visual infographics, on which tire with size 235/60 R15 is on top, and tire with size 255/60 R15 below. Both in the table and in the graph, the tires are
In the tire comparison table above, you can see a detailed calculation of the size difference between 205/65 R15 and 205/60 R15 tire. The calculation results are presented in the form of visual infographics, on which tire with size 205/65 R15 is on top, and tire with size 205/60 R15 below. Both in the table and in the graph, the tires are
So if we want to upgrade 185/65 R15 (15-inch alloys) to 16-inch alloys, then the size of the new tyre should be 205/55 R16, keeping the tyre OD within 3% permissible tolerance, i.e., between 24.47 – 25.20 inches.