Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/60r15 vs 245/60r15 Tire Comparison Side By Side
  295/60-15 245/60-15 Difference
Diameter inches (mm) 28.94 (735) 26.57 (675) -2.36 (-60) -8.2%
Width inches (mm) 11.61 (295) 9.65 (245) -1.97 (-50) -16.9%
Circum. inches (mm) 90.91 (2309.07) 83.49 (2120.58) -7.42 (-188.5) -8.2%
Sidewall Height inches (mm) 6.97 (177) 5.79 (147) -1.18 (-30) -16.9%
Revolutions per mile (km) 696.97 (433.07) 758.92 (471.57) 61.95 (38.5) 8.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.37 mph (29.56 km/h)
25 mph (40.23 km/h)22.96 mph (36.95 km/h)
30 mph (48.28 km/h)27.55 mph (44.34 km/h)
35 mph (56.33 km/h)32.14 mph (51.73 km/h)
40 mph (64.37 km/h)36.73 mph (59.12 km/h)
45 mph (72.42 km/h)41.33 mph (66.51 km/h)
50 mph (80.47 km/h)45.92 mph (73.9 km/h)
55 mph (88.51 km/h)50.51 mph (81.29 km/h)
60 mph (96.56 km/h)55.1 mph (88.68 km/h)
65 mph (104.61 km/h)59.69 mph (96.07 km/h)
70 mph (112.65 km/h)64.29 mph (103.46 km/h)
75 mph (120.7 km/h)68.88 mph (110.85 km/h)
80 mph (128.75 km/h)73.47 mph (118.24 km/h)
85 mph (136.79 km/h)78.06 mph (125.63 km/h)
90 mph (144.84 km/h)82.65 mph (133.02 km/h)
95 mph (152.89 km/h)87.24 mph (140.41 km/h)
100 mph (160.93 km/h)91.84 mph (147.8 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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