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 245/60r15 Tire Comparison Side By Side
  295/45-19 245/60-15 Difference
Diameter inches (mm) 29.45 (748.1) 26.57 (675) -2.88 (-73.1) -9.8%
Width inches (mm) 11.61 (295) 9.65 (245) -1.97 (-50) -16.9%
Circum. inches (mm) 92.53 (2350.23) 83.49 (2120.58) -9.04 (-229.65) -9.8%
Sidewall Height inches (mm) 5.23 (132.75) 5.79 (147) 0.56 (14.25) 10.7%
Revolutions per mile (km) 684.76 (425.49) 758.92 (471.57) 74.16 (46.08) 10.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.05 mph (29.04 km/h)
25 mph (40.23 km/h)22.56 mph (36.3 km/h)
30 mph (48.28 km/h)27.07 mph (43.56 km/h)
35 mph (56.33 km/h)31.58 mph (50.82 km/h)
40 mph (64.37 km/h)36.09 mph (58.08 km/h)
45 mph (72.42 km/h)40.6 mph (65.34 km/h)
50 mph (80.47 km/h)45.11 mph (72.6 km/h)
55 mph (88.51 km/h)49.63 mph (79.87 km/h)
60 mph (96.56 km/h)54.14 mph (87.13 km/h)
65 mph (104.61 km/h)58.65 mph (94.39 km/h)
70 mph (112.65 km/h)63.16 mph (101.65 km/h)
75 mph (120.7 km/h)67.67 mph (108.91 km/h)
80 mph (128.75 km/h)72.18 mph (116.17 km/h)
85 mph (136.79 km/h)76.69 mph (123.43 km/h)
90 mph (144.84 km/h)81.21 mph (130.69 km/h)
95 mph (152.89 km/h)85.72 mph (137.95 km/h)
100 mph (160.93 km/h)90.23 mph (145.21 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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