Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r17 vs 305/45r17 Tire Comparison Side By Side
  295/45-17 305/45-17 Difference
Diameter inches (mm) 27.45 (697.3) 27.81 (706.3) 0.35 (9) 1.3%
Width inches (mm) 11.61 (295) 12.01 (305) 0.39 (10) 3.4%
Circum. inches (mm) 86.25 (2190.63) 87.36 (2218.91) 1.11 (28.27) 1.3%
Sidewall Height inches (mm) 5.23 (132.75) 5.4 (137.25) 0.18 (4.5) 3.4%
Revolutions per mile (km) 734.65 (456.49) 725.29 (450.67) -9.36 (-5.82) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.26 mph (32.6 km/h)
25 mph (40.23 km/h)25.32 mph (40.75 km/h)
30 mph (48.28 km/h)30.39 mph (48.9 km/h)
35 mph (56.33 km/h)35.45 mph (57.05 km/h)
40 mph (64.37 km/h)40.52 mph (65.2 km/h)
45 mph (72.42 km/h)45.58 mph (73.36 km/h)
50 mph (80.47 km/h)50.65 mph (81.51 km/h)
55 mph (88.51 km/h)55.71 mph (89.66 km/h)
60 mph (96.56 km/h)60.77 mph (97.81 km/h)
65 mph (104.61 km/h)65.84 mph (105.96 km/h)
70 mph (112.65 km/h)70.9 mph (114.11 km/h)
75 mph (120.7 km/h)75.97 mph (122.26 km/h)
80 mph (128.75 km/h)81.03 mph (130.41 km/h)
85 mph (136.79 km/h)86.1 mph (138.56 km/h)
90 mph (144.84 km/h)91.16 mph (146.71 km/h)
95 mph (152.89 km/h)96.23 mph (154.86 km/h)
100 mph (160.93 km/h)101.29 mph (163.01 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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