Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r15 vs 295/50r15 Tire Comparison Side By Side
  295/45-15 295/50-15 Difference
Diameter inches (mm) 25.45 (646.5) 26.61 (676) 1.16 (29.5) 4.6%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 79.96 (2031.04) 83.61 (2123.72) 3.65 (92.68) 4.6%
Sidewall Height inches (mm) 5.23 (132.75) 5.81 (147.5) 0.58 (14.75) 11.1%
Revolutions per mile (km) 792.37 (492.36) 757.8 (470.87) -34.58 (-21.49) -4.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.91 mph (33.66 km/h)
25 mph (40.23 km/h)26.14 mph (42.07 km/h)
30 mph (48.28 km/h)31.37 mph (50.48 km/h)
35 mph (56.33 km/h)36.6 mph (58.9 km/h)
40 mph (64.37 km/h)41.83 mph (67.31 km/h)
45 mph (72.42 km/h)47.05 mph (75.73 km/h)
50 mph (80.47 km/h)52.28 mph (84.14 km/h)
55 mph (88.51 km/h)57.51 mph (92.55 km/h)
60 mph (96.56 km/h)62.74 mph (100.97 km/h)
65 mph (104.61 km/h)67.97 mph (109.38 km/h)
70 mph (112.65 km/h)73.19 mph (117.79 km/h)
75 mph (120.7 km/h)78.42 mph (126.21 km/h)
80 mph (128.75 km/h)83.65 mph (134.62 km/h)
85 mph (136.79 km/h)88.88 mph (143.04 km/h)
90 mph (144.84 km/h)94.11 mph (151.45 km/h)
95 mph (152.89 km/h)99.33 mph (159.86 km/h)
100 mph (160.93 km/h)104.56 mph (168.28 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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