Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
250/70r17 vs 265/70r16 Tire Comparison Side By Side
  250/70-17 265/70-16 Difference
Diameter inches (mm) 30.78 (781.8) 30.61 (777.4) -0.17 (-4.4) -0.6%
Width inches (mm) 9.84 (250) 10.43 (265) 0.59 (15) 6%
Circum. inches (mm) 96.7 (2456.1) 96.15 (2442.27) -0.54 (-13.82) -0.6%
Sidewall Height inches (mm) 6.89 (175) 7.3 (185.5) 0.41 (10.5) 6%
Revolutions per mile (km) 655.24 (407.15) 658.95 (409.45) 3.71 (2.3) 0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.89 mph (32.01 km/h)
25 mph (40.23 km/h)24.86 mph (40.01 km/h)
30 mph (48.28 km/h)29.83 mph (48.01 km/h)
35 mph (56.33 km/h)34.8 mph (56.01 km/h)
40 mph (64.37 km/h)39.77 mph (64.01 km/h)
45 mph (72.42 km/h)44.75 mph (72.01 km/h)
50 mph (80.47 km/h)49.72 mph (80.01 km/h)
55 mph (88.51 km/h)54.69 mph (88.02 km/h)
60 mph (96.56 km/h)59.66 mph (96.02 km/h)
65 mph (104.61 km/h)64.63 mph (104.02 km/h)
70 mph (112.65 km/h)69.61 mph (112.02 km/h)
75 mph (120.7 km/h)74.58 mph (120.02 km/h)
80 mph (128.75 km/h)79.55 mph (128.02 km/h)
85 mph (136.79 km/h)84.52 mph (136.02 km/h)
90 mph (144.84 km/h)89.49 mph (144.03 km/h)
95 mph (152.89 km/h)94.47 mph (152.03 km/h)
100 mph (160.93 km/h)99.44 mph (160.03 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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