Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/60r16 vs 245/60r16 Tire Comparison Side By Side
  205/60-16 245/60-16 Difference
Diameter inches (mm) 25.69 (652.4) 27.57 (700.4) 1.89 (48) 7.4%
Width inches (mm) 8.07 (205) 9.65 (245) 1.57 (40) 19.5%
Circum. inches (mm) 80.69 (2049.58) 86.63 (2200.37) 5.94 (150.8) 7.4%
Sidewall Height inches (mm) 4.84 (123) 5.79 (147) 0.94 (24) 19.5%
Revolutions per mile (km) 785.21 (487.91) 731.4 (454.47) -53.81 (-33.44) -6.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.47 mph (34.56 km/h)
25 mph (40.23 km/h)26.84 mph (43.19 km/h)
30 mph (48.28 km/h)32.21 mph (51.83 km/h)
35 mph (56.33 km/h)37.58 mph (60.47 km/h)
40 mph (64.37 km/h)42.94 mph (69.11 km/h)
45 mph (72.42 km/h)48.31 mph (77.75 km/h)
50 mph (80.47 km/h)53.68 mph (86.39 km/h)
55 mph (88.51 km/h)59.05 mph (95.03 km/h)
60 mph (96.56 km/h)64.41 mph (103.67 km/h)
65 mph (104.61 km/h)69.78 mph (112.3 km/h)
70 mph (112.65 km/h)75.15 mph (120.94 km/h)
75 mph (120.7 km/h)80.52 mph (129.58 km/h)
80 mph (128.75 km/h)85.89 mph (138.22 km/h)
85 mph (136.79 km/h)91.25 mph (146.86 km/h)
90 mph (144.84 km/h)96.62 mph (155.5 km/h)
95 mph (152.89 km/h)101.99 mph (164.14 km/h)
100 mph (160.93 km/h)107.36 mph (172.78 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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