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 275/50r17 Tire Comparison Side By Side
  295/45-17 275/50-17 Difference
Diameter inches (mm) 27.45 (697.3) 27.83 (706.8) 0.37 (9.5) 1.4%
Width inches (mm) 11.61 (295) 10.83 (275) -0.79 (-20) -6.8%
Circum. inches (mm) 86.25 (2190.63) 87.42 (2220.48) 1.18 (29.85) 1.4%
Sidewall Height inches (mm) 5.23 (132.75) 5.41 (137.5) 0.19 (4.75) 3.6%
Revolutions per mile (km) 734.65 (456.49) 724.77 (450.35) -9.87 (-6.14) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.27 mph (32.63 km/h)
25 mph (40.23 km/h)25.34 mph (40.78 km/h)
30 mph (48.28 km/h)30.41 mph (48.94 km/h)
35 mph (56.33 km/h)35.48 mph (57.09 km/h)
40 mph (64.37 km/h)40.54 mph (65.25 km/h)
45 mph (72.42 km/h)45.61 mph (73.41 km/h)
50 mph (80.47 km/h)50.68 mph (81.56 km/h)
55 mph (88.51 km/h)55.75 mph (89.72 km/h)
60 mph (96.56 km/h)60.82 mph (97.88 km/h)
65 mph (104.61 km/h)65.89 mph (106.03 km/h)
70 mph (112.65 km/h)70.95 mph (114.19 km/h)
75 mph (120.7 km/h)76.02 mph (122.35 km/h)
80 mph (128.75 km/h)81.09 mph (130.5 km/h)
85 mph (136.79 km/h)86.16 mph (138.66 km/h)
90 mph (144.84 km/h)91.23 mph (146.81 km/h)
95 mph (152.89 km/h)96.29 mph (154.97 km/h)
100 mph (160.93 km/h)101.36 mph (163.13 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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