Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/75r16 vs 275/70r16 Tire Comparison Side By Side
  265/75-16 275/70-16 Difference
Diameter inches (mm) 31.65 (803.9) 31.16 (791.4) -0.49 (-12.5) -1.6%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 99.43 (2525.53) 97.88 (2486.26) -1.55 (-39.27) -1.6%
Sidewall Height inches (mm) 7.82 (198.75) 7.58 (192.5) -0.25 (-6.25) -3.1%
Revolutions per mile (km) 637.23 (395.96) 647.3 (402.21) 10.06 (6.25) 1.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.69 mph (31.69 km/h)
25 mph (40.23 km/h)24.61 mph (39.61 km/h)
30 mph (48.28 km/h)29.53 mph (47.53 km/h)
35 mph (56.33 km/h)34.46 mph (55.45 km/h)
40 mph (64.37 km/h)39.38 mph (63.37 km/h)
45 mph (72.42 km/h)44.3 mph (71.29 km/h)
50 mph (80.47 km/h)49.22 mph (79.22 km/h)
55 mph (88.51 km/h)54.14 mph (87.14 km/h)
60 mph (96.56 km/h)59.07 mph (95.06 km/h)
65 mph (104.61 km/h)63.99 mph (102.98 km/h)
70 mph (112.65 km/h)68.91 mph (110.9 km/h)
75 mph (120.7 km/h)73.83 mph (118.82 km/h)
80 mph (128.75 km/h)78.76 mph (126.75 km/h)
85 mph (136.79 km/h)83.68 mph (134.67 km/h)
90 mph (144.84 km/h)88.6 mph (142.59 km/h)
95 mph (152.89 km/h)93.52 mph (150.51 km/h)
100 mph (160.93 km/h)98.45 mph (158.43 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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