Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
240/55r16 vs 215/95r16 Tire Comparison Side By Side
  240/55-16 215/95-16 Difference
Diameter inches (mm) 26.39 (670.4) 32.08 (814.9) 5.69 (144.5) 21.6%
Width inches (mm) 9.45 (240) 8.46 (215) -0.98 (-25) -10.4%
Circum. inches (mm) 82.92 (2106.12) 100.79 (2560.08) 17.87 (453.96) 21.6%
Sidewall Height inches (mm) 5.2 (132) 8.04 (204.25) 2.84 (72.25) 54.7%
Revolutions per mile (km) 764.13 (474.81) 628.63 (390.61) -135.5 (-84.19) -17.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)24.31 mph (39.12 km/h)
25 mph (40.23 km/h)30.39 mph (48.91 km/h)
30 mph (48.28 km/h)36.47 mph (58.69 km/h)
35 mph (56.33 km/h)42.54 mph (68.47 km/h)
40 mph (64.37 km/h)48.62 mph (78.25 km/h)
45 mph (72.42 km/h)54.7 mph (88.03 km/h)
50 mph (80.47 km/h)60.78 mph (97.81 km/h)
55 mph (88.51 km/h)66.85 mph (107.59 km/h)
60 mph (96.56 km/h)72.93 mph (117.37 km/h)
65 mph (104.61 km/h)79.01 mph (127.15 km/h)
70 mph (112.65 km/h)85.09 mph (136.94 km/h)
75 mph (120.7 km/h)91.17 mph (146.72 km/h)
80 mph (128.75 km/h)97.24 mph (156.5 km/h)
85 mph (136.79 km/h)103.32 mph (166.28 km/h)
90 mph (144.84 km/h)109.4 mph (176.06 km/h)
95 mph (152.89 km/h)115.48 mph (185.84 km/h)
100 mph (160.93 km/h)121.55 mph (195.62 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
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