Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/70r10 vs 145/95r10 Tire Comparison Side By Side
  165/70-10 145/95-10 Difference
Diameter inches (mm) 19.09 (485) 20.85 (529.5) 1.75 (44.5) 9.2%
Width inches (mm) 6.5 (165) 5.71 (145) -0.79 (-20) -12.1%
Circum. inches (mm) 59.99 (1523.67) 65.49 (1663.47) 5.5 (139.8) 9.2%
Sidewall Height inches (mm) 4.55 (115.5) 5.42 (137.75) 0.88 (22.25) 19.3%
Revolutions per mile (km) 1056.23 (656.31) 967.46 (601.15) -88.77 (-55.16) -8.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.84 mph (35.14 km/h)
25 mph (40.23 km/h)27.29 mph (43.93 km/h)
30 mph (48.28 km/h)32.75 mph (52.71 km/h)
35 mph (56.33 km/h)38.21 mph (61.5 km/h)
40 mph (64.37 km/h)43.67 mph (70.28 km/h)
45 mph (72.42 km/h)49.13 mph (79.07 km/h)
50 mph (80.47 km/h)54.59 mph (87.85 km/h)
55 mph (88.51 km/h)60.05 mph (96.64 km/h)
60 mph (96.56 km/h)65.51 mph (105.42 km/h)
65 mph (104.61 km/h)70.96 mph (114.21 km/h)
70 mph (112.65 km/h)76.42 mph (122.99 km/h)
75 mph (120.7 km/h)81.88 mph (131.78 km/h)
80 mph (128.75 km/h)87.34 mph (140.56 km/h)
85 mph (136.79 km/h)92.8 mph (149.35 km/h)
90 mph (144.84 km/h)98.26 mph (158.13 km/h)
95 mph (152.89 km/h)103.72 mph (166.92 km/h)
100 mph (160.93 km/h)109.18 mph (175.7 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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