Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/35r24 vs 265/45r24 Tire Comparison Side By Side
  285/35-24 265/45-24 Difference
Diameter inches (mm) 31.85 (809.1) 33.39 (848.1) 1.54 (39) 4.8%
Width inches (mm) 11.22 (285) 10.43 (265) -0.79 (-20) -7%
Circum. inches (mm) 100.07 (2541.86) 104.9 (2664.38) 4.82 (122.52) 4.8%
Sidewall Height inches (mm) 3.93 (99.75) 4.69 (119.25) 0.77 (19.5) 19.5%
Revolutions per mile (km) 633.14 (393.41) 604.02 (375.32) -29.11 (-18.09) -4.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.96 mph (33.74 km/h)
25 mph (40.23 km/h)26.21 mph (42.17 km/h)
30 mph (48.28 km/h)31.45 mph (50.61 km/h)
35 mph (56.33 km/h)36.69 mph (59.04 km/h)
40 mph (64.37 km/h)41.93 mph (67.48 km/h)
45 mph (72.42 km/h)47.17 mph (75.91 km/h)
50 mph (80.47 km/h)52.41 mph (84.35 km/h)
55 mph (88.51 km/h)57.65 mph (92.78 km/h)
60 mph (96.56 km/h)62.89 mph (101.22 km/h)
65 mph (104.61 km/h)68.13 mph (109.65 km/h)
70 mph (112.65 km/h)73.37 mph (118.08 km/h)
75 mph (120.7 km/h)78.62 mph (126.52 km/h)
80 mph (128.75 km/h)83.86 mph (134.95 km/h)
85 mph (136.79 km/h)89.1 mph (143.39 km/h)
90 mph (144.84 km/h)94.34 mph (151.82 km/h)
95 mph (152.89 km/h)99.58 mph (160.26 km/h)
100 mph (160.93 km/h)104.82 mph (168.69 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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