Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/75r16 vs 265/70r16 Tire Comparison Side By Side
  255/75-16 265/70-16 Difference
Diameter inches (mm) 31.06 (788.9) 30.61 (777.4) -0.45 (-11.5) -1.5%
Width inches (mm) 10.04 (255) 10.43 (265) 0.39 (10) 3.9%
Circum. inches (mm) 97.57 (2478.4) 96.15 (2442.27) -1.42 (-36.13) -1.5%
Sidewall Height inches (mm) 7.53 (191.25) 7.3 (185.5) -0.23 (-5.75) -3%
Revolutions per mile (km) 649.35 (403.48) 658.95 (409.45) 9.61 (5.97) 1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.71 mph (31.72 km/h)
25 mph (40.23 km/h)24.64 mph (39.65 km/h)
30 mph (48.28 km/h)29.56 mph (47.58 km/h)
35 mph (56.33 km/h)34.49 mph (55.51 km/h)
40 mph (64.37 km/h)39.42 mph (63.44 km/h)
45 mph (72.42 km/h)44.34 mph (71.36 km/h)
50 mph (80.47 km/h)49.27 mph (79.29 km/h)
55 mph (88.51 km/h)54.2 mph (87.22 km/h)
60 mph (96.56 km/h)59.13 mph (95.15 km/h)
65 mph (104.61 km/h)64.05 mph (103.08 km/h)
70 mph (112.65 km/h)68.98 mph (111.01 km/h)
75 mph (120.7 km/h)73.91 mph (118.94 km/h)
80 mph (128.75 km/h)78.83 mph (126.87 km/h)
85 mph (136.79 km/h)83.76 mph (134.8 km/h)
90 mph (144.84 km/h)88.69 mph (142.73 km/h)
95 mph (152.89 km/h)93.62 mph (150.66 km/h)
100 mph (160.93 km/h)98.54 mph (158.59 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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