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 265/70r15 Tire Comparison Side By Side
  295/75-15 265/70-15 Difference
Diameter inches (mm) 32.42 (823.5) 29.61 (752) -2.81 (-71.5) -8.7%
Width inches (mm) 11.61 (295) 10.43 (265) -1.18 (-30) -10.2%
Circum. inches (mm) 101.85 (2587.1) 93.01 (2362.48) -8.84 (-224.62) -8.7%
Sidewall Height inches (mm) 8.71 (221.25) 7.3 (185.5) -1.41 (-35.75) -16.2%
Revolutions per mile (km) 622.06 (386.53) 681.21 (423.28) 59.15 (36.75) 9.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.26 mph (29.39 km/h)
25 mph (40.23 km/h)22.83 mph (36.74 km/h)
30 mph (48.28 km/h)27.4 mph (44.09 km/h)
35 mph (56.33 km/h)31.96 mph (51.44 km/h)
40 mph (64.37 km/h)36.53 mph (58.78 km/h)
45 mph (72.42 km/h)41.09 mph (66.13 km/h)
50 mph (80.47 km/h)45.66 mph (73.48 km/h)
55 mph (88.51 km/h)50.22 mph (80.83 km/h)
60 mph (96.56 km/h)54.79 mph (88.18 km/h)
65 mph (104.61 km/h)59.36 mph (95.53 km/h)
70 mph (112.65 km/h)63.92 mph (102.87 km/h)
75 mph (120.7 km/h)68.49 mph (110.22 km/h)
80 mph (128.75 km/h)73.05 mph (117.57 km/h)
85 mph (136.79 km/h)77.62 mph (124.92 km/h)
90 mph (144.84 km/h)82.19 mph (132.27 km/h)
95 mph (152.89 km/h)86.75 mph (139.61 km/h)
100 mph (160.93 km/h)91.32 mph (146.96 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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