Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/85r16 vs 295/75r16 Tire Comparison Side By Side
  235/85-16 295/75-16 Difference
Diameter inches (mm) 31.73 (805.9) 33.42 (848.9) 1.69 (43) 5.3%
Width inches (mm) 9.25 (235) 11.61 (295) 2.36 (60) 25.5%
Circum. inches (mm) 99.68 (2531.81) 105 (2666.9) 5.32 (135.09) 5.3%
Sidewall Height inches (mm) 7.86 (199.75) 8.71 (221.25) 0.85 (21.5) 10.8%
Revolutions per mile (km) 635.65 (394.97) 603.45 (374.97) -32.2 (-20.01) -5.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.07 mph (33.9 km/h)
25 mph (40.23 km/h)26.33 mph (42.38 km/h)
30 mph (48.28 km/h)31.6 mph (50.86 km/h)
35 mph (56.33 km/h)36.87 mph (59.33 km/h)
40 mph (64.37 km/h)42.13 mph (67.81 km/h)
45 mph (72.42 km/h)47.4 mph (76.28 km/h)
50 mph (80.47 km/h)52.67 mph (84.76 km/h)
55 mph (88.51 km/h)57.93 mph (93.24 km/h)
60 mph (96.56 km/h)63.2 mph (101.71 km/h)
65 mph (104.61 km/h)68.47 mph (110.19 km/h)
70 mph (112.65 km/h)73.73 mph (118.67 km/h)
75 mph (120.7 km/h)79 mph (127.14 km/h)
80 mph (128.75 km/h)84.27 mph (135.62 km/h)
85 mph (136.79 km/h)89.54 mph (144.09 km/h)
90 mph (144.84 km/h)94.8 mph (152.57 km/h)
95 mph (152.89 km/h)100.07 mph (161.05 km/h)
100 mph (160.93 km/h)105.34 mph (169.52 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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