Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/35r16 vs 245/50r17 Tire Comparison Side By Side
  245/35-16 245/50-17 Difference
Diameter inches (mm) 22.75 (577.9) 26.65 (676.8) 3.89 (98.9) 17.1%
Width inches (mm) 9.65 (245) 9.65 (245) 0 (0) 0%
Circum. inches (mm) 71.48 (1815.53) 83.71 (2126.23) 12.23 (310.7) 17.1%
Sidewall Height inches (mm) 3.38 (85.75) 4.82 (122.5) 1.45 (36.75) 42.9%
Revolutions per mile (km) 886.43 (550.8) 756.9 (470.32) -129.53 (-80.49) -14.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.42 mph (37.7 km/h)
25 mph (40.23 km/h)29.28 mph (47.12 km/h)
30 mph (48.28 km/h)35.13 mph (56.54 km/h)
35 mph (56.33 km/h)40.99 mph (65.97 km/h)
40 mph (64.37 km/h)46.85 mph (75.39 km/h)
45 mph (72.42 km/h)52.7 mph (84.81 km/h)
50 mph (80.47 km/h)58.56 mph (94.24 km/h)
55 mph (88.51 km/h)64.41 mph (103.66 km/h)
60 mph (96.56 km/h)70.27 mph (113.09 km/h)
65 mph (104.61 km/h)76.12 mph (122.51 km/h)
70 mph (112.65 km/h)81.98 mph (131.93 km/h)
75 mph (120.7 km/h)87.84 mph (141.36 km/h)
80 mph (128.75 km/h)93.69 mph (150.78 km/h)
85 mph (136.79 km/h)99.55 mph (160.21 km/h)
90 mph (144.84 km/h)105.4 mph (169.63 km/h)
95 mph (152.89 km/h)111.26 mph (179.05 km/h)
100 mph (160.93 km/h)117.11 mph (188.48 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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