Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r17 vs 236/60r17 Tire Comparison Side By Side
  195/60-17 236/60-17 Difference
Diameter inches (mm) 26.21 (665.8) 28.15 (715) 1.94 (49.2) 7.4%
Width inches (mm) 7.68 (195) 9.29 (236) 1.61 (41) 21%
Circum. inches (mm) 82.35 (2091.67) 88.43 (2246.24) 6.09 (154.57) 7.4%
Sidewall Height inches (mm) 4.61 (117) 5.57 (141.6) 0.97 (24.6) 21%
Revolutions per mile (km) 769.41 (478.09) 716.46 (445.19) -52.94 (-32.9) -6.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.48 mph (34.57 km/h)
25 mph (40.23 km/h)26.85 mph (43.21 km/h)
30 mph (48.28 km/h)32.22 mph (51.85 km/h)
35 mph (56.33 km/h)37.59 mph (60.49 km/h)
40 mph (64.37 km/h)42.96 mph (69.13 km/h)
45 mph (72.42 km/h)48.33 mph (77.77 km/h)
50 mph (80.47 km/h)53.69 mph (86.41 km/h)
55 mph (88.51 km/h)59.06 mph (95.05 km/h)
60 mph (96.56 km/h)64.43 mph (103.7 km/h)
65 mph (104.61 km/h)69.8 mph (112.34 km/h)
70 mph (112.65 km/h)75.17 mph (120.98 km/h)
75 mph (120.7 km/h)80.54 mph (129.62 km/h)
80 mph (128.75 km/h)85.91 mph (138.26 km/h)
85 mph (136.79 km/h)91.28 mph (146.9 km/h)
90 mph (144.84 km/h)96.65 mph (155.54 km/h)
95 mph (152.89 km/h)102.02 mph (164.19 km/h)
100 mph (160.93 km/h)107.39 mph (172.83 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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