Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r16 vs 205/25r16 Tire Comparison Side By Side
  215/35-16 205/25-16 Difference
Diameter inches (mm) 21.93 (556.9) 20.04 (508.9) -1.89 (-48) -8.6%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 68.88 (1749.55) 62.94 (1598.76) -5.94 (-150.8) -8.6%
Sidewall Height inches (mm) 2.96 (75.25) 2.02 (51.25) -0.94 (-24) -31.9%
Revolutions per mile (km) 919.86 (571.57) 1006.62 (625.48) 86.76 (53.91) 9.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.28 mph (29.41 km/h)
25 mph (40.23 km/h)22.85 mph (36.77 km/h)
30 mph (48.28 km/h)27.41 mph (44.12 km/h)
35 mph (56.33 km/h)31.98 mph (51.47 km/h)
40 mph (64.37 km/h)36.55 mph (58.83 km/h)
45 mph (72.42 km/h)41.12 mph (66.18 km/h)
50 mph (80.47 km/h)45.69 mph (73.53 km/h)
55 mph (88.51 km/h)50.26 mph (80.88 km/h)
60 mph (96.56 km/h)54.83 mph (88.24 km/h)
65 mph (104.61 km/h)59.4 mph (95.59 km/h)
70 mph (112.65 km/h)63.97 mph (102.94 km/h)
75 mph (120.7 km/h)68.54 mph (110.3 km/h)
80 mph (128.75 km/h)73.1 mph (117.65 km/h)
85 mph (136.79 km/h)77.67 mph (125 km/h)
90 mph (144.84 km/h)82.24 mph (132.36 km/h)
95 mph (152.89 km/h)86.81 mph (139.71 km/h)
100 mph (160.93 km/h)91.38 mph (147.06 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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