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 28/11.5r17 Tire Comparison Side By Side
  295/45-17 28/11.5-17 Difference
Diameter inches (mm) 27.45 (697.3) 28.04 (712.12) 0.58 (14.82) 2.1%
Width inches (mm) 11.61 (295) 11.5 (292) -0.12 (-3) -1%
Circum. inches (mm) 86.25 (2190.63) 88.08 (2237.19) 1.83 (46.56) 2.1%
Sidewall Height inches (mm) 5.23 (132.75) 5.52 (140.16) 0.29 (7.41) 5.6%
Revolutions per mile (km) 734.65 (456.49) 719.36 (446.99) -15.29 (-9.5) -2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.43 mph (32.87 km/h)
25 mph (40.23 km/h)25.53 mph (41.09 km/h)
30 mph (48.28 km/h)30.64 mph (49.31 km/h)
35 mph (56.33 km/h)35.74 mph (57.52 km/h)
40 mph (64.37 km/h)40.85 mph (65.74 km/h)
45 mph (72.42 km/h)45.96 mph (73.96 km/h)
50 mph (80.47 km/h)51.06 mph (82.18 km/h)
55 mph (88.51 km/h)56.17 mph (90.4 km/h)
60 mph (96.56 km/h)61.28 mph (98.61 km/h)
65 mph (104.61 km/h)66.38 mph (106.83 km/h)
70 mph (112.65 km/h)71.49 mph (115.05 km/h)
75 mph (120.7 km/h)76.59 mph (123.27 km/h)
80 mph (128.75 km/h)81.7 mph (131.48 km/h)
85 mph (136.79 km/h)86.81 mph (139.7 km/h)
90 mph (144.84 km/h)91.91 mph (147.92 km/h)
95 mph (152.89 km/h)97.02 mph (156.14 km/h)
100 mph (160.93 km/h)102.13 mph (164.36 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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