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 265/35r24 Tire Comparison Side By Side
  285/35-24 265/35-24 Difference
Diameter inches (mm) 31.85 (809.1) 31.3 (795.1) -0.55 (-14) -1.7%
Width inches (mm) 11.22 (285) 10.43 (265) -0.79 (-20) -7%
Circum. inches (mm) 100.07 (2541.86) 98.34 (2497.88) -1.73 (-43.98) -1.7%
Sidewall Height inches (mm) 3.93 (99.75) 3.65 (92.75) -0.28 (-7) -7%
Revolutions per mile (km) 633.14 (393.41) 644.28 (400.34) 11.15 (6.93) 1.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.65 mph (31.63 km/h)
25 mph (40.23 km/h)24.57 mph (39.54 km/h)
30 mph (48.28 km/h)29.48 mph (47.45 km/h)
35 mph (56.33 km/h)34.39 mph (55.35 km/h)
40 mph (64.37 km/h)39.31 mph (63.26 km/h)
45 mph (72.42 km/h)44.22 mph (71.17 km/h)
50 mph (80.47 km/h)49.13 mph (79.08 km/h)
55 mph (88.51 km/h)54.05 mph (86.98 km/h)
60 mph (96.56 km/h)58.96 mph (94.89 km/h)
65 mph (104.61 km/h)63.88 mph (102.8 km/h)
70 mph (112.65 km/h)68.79 mph (110.71 km/h)
75 mph (120.7 km/h)73.7 mph (118.61 km/h)
80 mph (128.75 km/h)78.62 mph (126.52 km/h)
85 mph (136.79 km/h)83.53 mph (134.43 km/h)
90 mph (144.84 km/h)88.44 mph (142.34 km/h)
95 mph (152.89 km/h)93.36 mph (150.24 km/h)
100 mph (160.93 km/h)98.27 mph (158.15 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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