Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r19 vs 315/45r19 Tire Comparison Side By Side
  295/45-19 315/45-19 Difference
Diameter inches (mm) 29.45 (748.1) 30.16 (766.1) 0.71 (18) 2.4%
Width inches (mm) 11.61 (295) 12.4 (315) 0.79 (20) 6.8%
Circum. inches (mm) 92.53 (2350.23) 94.75 (2406.77) 2.23 (56.55) 2.4%
Sidewall Height inches (mm) 5.23 (132.75) 5.58 (141.75) 0.35 (9) 6.8%
Revolutions per mile (km) 684.76 (425.49) 668.67 (415.49) -16.09 (-10) -2.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.48 mph (32.96 km/h)
25 mph (40.23 km/h)25.6 mph (41.2 km/h)
30 mph (48.28 km/h)30.72 mph (49.44 km/h)
35 mph (56.33 km/h)35.84 mph (57.68 km/h)
40 mph (64.37 km/h)40.96 mph (65.92 km/h)
45 mph (72.42 km/h)46.08 mph (74.16 km/h)
50 mph (80.47 km/h)51.2 mph (82.4 km/h)
55 mph (88.51 km/h)56.32 mph (90.64 km/h)
60 mph (96.56 km/h)61.44 mph (98.88 km/h)
65 mph (104.61 km/h)66.56 mph (107.12 km/h)
70 mph (112.65 km/h)71.68 mph (115.36 km/h)
75 mph (120.7 km/h)76.8 mph (123.61 km/h)
80 mph (128.75 km/h)81.92 mph (131.85 km/h)
85 mph (136.79 km/h)87.05 mph (140.09 km/h)
90 mph (144.84 km/h)92.17 mph (148.33 km/h)
95 mph (152.89 km/h)97.29 mph (156.57 km/h)
100 mph (160.93 km/h)102.41 mph (164.81 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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