Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r18 vs 295/60r18 Tire Comparison Side By Side
  295/45-18 295/60-18 Difference
Diameter inches (mm) 28.45 (722.7) 31.94 (811.2) 3.48 (88.5) 12.2%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 89.39 (2270.43) 100.33 (2548.46) 10.95 (278.03) 12.2%
Sidewall Height inches (mm) 5.23 (132.75) 6.97 (177) 1.74 (44.25) 33.3%
Revolutions per mile (km) 708.83 (440.44) 631.5 (392.39) -77.33 (-48.05) -10.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.45 mph (36.13 km/h)
25 mph (40.23 km/h)28.06 mph (45.16 km/h)
30 mph (48.28 km/h)33.67 mph (54.19 km/h)
35 mph (56.33 km/h)39.29 mph (63.22 km/h)
40 mph (64.37 km/h)44.9 mph (72.26 km/h)
45 mph (72.42 km/h)50.51 mph (81.29 km/h)
50 mph (80.47 km/h)56.12 mph (90.32 km/h)
55 mph (88.51 km/h)61.74 mph (99.35 km/h)
60 mph (96.56 km/h)67.35 mph (108.39 km/h)
65 mph (104.61 km/h)72.96 mph (117.42 km/h)
70 mph (112.65 km/h)78.57 mph (126.45 km/h)
75 mph (120.7 km/h)84.18 mph (135.48 km/h)
80 mph (128.75 km/h)89.8 mph (144.51 km/h)
85 mph (136.79 km/h)95.41 mph (153.55 km/h)
90 mph (144.84 km/h)101.02 mph (162.58 km/h)
95 mph (152.89 km/h)106.63 mph (171.61 km/h)
100 mph (160.93 km/h)112.25 mph (180.64 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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