Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/75r22.5 vs 254/88r22.5 Tire Comparison Side By Side
  265/75-22.5 254/88-22.5 Difference
Diameter inches (mm) 38.15 (969) 40.1 (1018.54) 1.95 (49.54) 5.1%
Width inches (mm) 10.43 (265) 10 (254) -0.43 (-11) -4.2%
Circum. inches (mm) 119.85 (3044.2) 125.98 (3199.84) 6.13 (155.63) 5.1%
Sidewall Height inches (mm) 7.82 (198.75) 8.8 (223.52) 0.98 (24.77) 12.5%
Revolutions per mile (km) 528.66 (328.49) 502.95 (312.52) -25.71 (-15.98) -4.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.02 mph (33.83 km/h)
25 mph (40.23 km/h)26.28 mph (42.29 km/h)
30 mph (48.28 km/h)31.53 mph (50.75 km/h)
35 mph (56.33 km/h)36.79 mph (59.21 km/h)
40 mph (64.37 km/h)42.04 mph (67.66 km/h)
45 mph (72.42 km/h)47.3 mph (76.12 km/h)
50 mph (80.47 km/h)52.56 mph (84.58 km/h)
55 mph (88.51 km/h)57.81 mph (93.04 km/h)
60 mph (96.56 km/h)63.07 mph (101.5 km/h)
65 mph (104.61 km/h)68.32 mph (109.96 km/h)
70 mph (112.65 km/h)73.58 mph (118.41 km/h)
75 mph (120.7 km/h)78.83 mph (126.87 km/h)
80 mph (128.75 km/h)84.09 mph (135.33 km/h)
85 mph (136.79 km/h)89.35 mph (143.79 km/h)
90 mph (144.84 km/h)94.6 mph (152.25 km/h)
95 mph (152.89 km/h)99.86 mph (160.7 km/h)
100 mph (160.93 km/h)105.11 mph (169.16 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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