Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/45r10 vs 235/60r10 Tire Comparison Side By Side
  225/45-10 235/60-10 Difference
Diameter inches (mm) 17.97 (456.5) 21.1 (536) 3.13 (79.5) 17.4%
Width inches (mm) 8.86 (225) 9.25 (235) 0.39 (10) 4.4%
Circum. inches (mm) 56.46 (1434.14) 66.3 (1683.89) 9.83 (249.76) 17.4%
Sidewall Height inches (mm) 3.99 (101.25) 5.55 (141) 1.56 (39.75) 39.3%
Revolutions per mile (km) 1122.17 (697.28) 955.73 (593.86) -166.44 (-103.42) -14.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.48 mph (37.79 km/h)
25 mph (40.23 km/h)29.35 mph (47.24 km/h)
30 mph (48.28 km/h)35.22 mph (56.69 km/h)
35 mph (56.33 km/h)41.1 mph (66.14 km/h)
40 mph (64.37 km/h)46.97 mph (75.58 km/h)
45 mph (72.42 km/h)52.84 mph (85.03 km/h)
50 mph (80.47 km/h)58.71 mph (94.48 km/h)
55 mph (88.51 km/h)64.58 mph (103.93 km/h)
60 mph (96.56 km/h)70.45 mph (113.38 km/h)
65 mph (104.61 km/h)76.32 mph (122.83 km/h)
70 mph (112.65 km/h)82.19 mph (132.27 km/h)
75 mph (120.7 km/h)88.06 mph (141.72 km/h)
80 mph (128.75 km/h)93.93 mph (151.17 km/h)
85 mph (136.79 km/h)99.8 mph (160.62 km/h)
90 mph (144.84 km/h)105.67 mph (170.07 km/h)
95 mph (152.89 km/h)111.54 mph (179.51 km/h)
100 mph (160.93 km/h)117.42 mph (188.96 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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