Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/75r15 vs 33/10.5r15 Tire Comparison Side By Side
  295/75-15 33/10.5-15 Difference
Diameter inches (mm) 32.42 (823.5) 33.08 (840.24) 0.66 (16.74) 2%
Width inches (mm) 11.61 (295) 10.51 (267) -1.1 (-28) -9.5%
Circum. inches (mm) 101.85 (2587.1) 103.92 (2639.69) 2.07 (52.59) 2%
Sidewall Height inches (mm) 8.71 (221.25) 9.04 (229.62) 0.33 (8.37) 3.8%
Revolutions per mile (km) 622.06 (386.53) 609.67 (378.83) -12.39 (-7.7) -2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.41 mph (32.84 km/h)
25 mph (40.23 km/h)25.51 mph (41.05 km/h)
30 mph (48.28 km/h)30.61 mph (49.26 km/h)
35 mph (56.33 km/h)35.71 mph (57.47 km/h)
40 mph (64.37 km/h)40.81 mph (65.68 km/h)
45 mph (72.42 km/h)45.91 mph (73.89 km/h)
50 mph (80.47 km/h)51.02 mph (82.1 km/h)
55 mph (88.51 km/h)56.12 mph (90.31 km/h)
60 mph (96.56 km/h)61.22 mph (98.52 km/h)
65 mph (104.61 km/h)66.32 mph (106.73 km/h)
70 mph (112.65 km/h)71.42 mph (114.94 km/h)
75 mph (120.7 km/h)76.52 mph (123.15 km/h)
80 mph (128.75 km/h)81.63 mph (131.36 km/h)
85 mph (136.79 km/h)86.73 mph (139.58 km/h)
90 mph (144.84 km/h)91.83 mph (147.79 km/h)
95 mph (152.89 km/h)96.93 mph (156 km/h)
100 mph (160.93 km/h)102.03 mph (164.21 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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