Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/65r15 vs 295/50r15 Tire Comparison Side By Side
  295/65-15 295/50-15 Difference
Diameter inches (mm) 30.1 (764.5) 26.61 (676) -3.48 (-88.5) -11.6%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 94.56 (2401.75) 83.61 (2123.72) -10.95 (-278.03) -11.6%
Sidewall Height inches (mm) 7.55 (191.75) 5.81 (147.5) -1.74 (-44.25) -23.1%
Revolutions per mile (km) 670.07 (416.36) 757.8 (470.87) 87.72 (54.51) 13.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.68 mph (28.46 km/h)
25 mph (40.23 km/h)22.11 mph (35.58 km/h)
30 mph (48.28 km/h)26.53 mph (42.69 km/h)
35 mph (56.33 km/h)30.95 mph (49.81 km/h)
40 mph (64.37 km/h)35.37 mph (56.92 km/h)
45 mph (72.42 km/h)39.79 mph (64.04 km/h)
50 mph (80.47 km/h)44.21 mph (71.15 km/h)
55 mph (88.51 km/h)48.63 mph (78.27 km/h)
60 mph (96.56 km/h)53.05 mph (85.38 km/h)
65 mph (104.61 km/h)57.48 mph (92.5 km/h)
70 mph (112.65 km/h)61.9 mph (99.61 km/h)
75 mph (120.7 km/h)66.32 mph (106.73 km/h)
80 mph (128.75 km/h)70.74 mph (113.84 km/h)
85 mph (136.79 km/h)75.16 mph (120.96 km/h)
90 mph (144.84 km/h)79.58 mph (128.07 km/h)
95 mph (152.89 km/h)84 mph (135.19 km/h)
100 mph (160.93 km/h)88.42 mph (142.3 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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