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 275/45r17 Tire Comparison Side By Side
  295/45-17 275/45-17 Difference
Diameter inches (mm) 27.45 (697.3) 26.74 (679.3) -0.71 (-18) -2.6%
Width inches (mm) 11.61 (295) 10.83 (275) -0.79 (-20) -6.8%
Circum. inches (mm) 86.25 (2190.63) 84.02 (2134.08) -2.23 (-56.55) -2.6%
Sidewall Height inches (mm) 5.23 (132.75) 4.87 (123.75) -0.35 (-9) -6.8%
Revolutions per mile (km) 734.65 (456.49) 754.11 (468.58) 19.47 (12.1) 2.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.48 mph (31.36 km/h)
25 mph (40.23 km/h)24.35 mph (39.2 km/h)
30 mph (48.28 km/h)29.23 mph (47.03 km/h)
35 mph (56.33 km/h)34.1 mph (54.87 km/h)
40 mph (64.37 km/h)38.97 mph (62.71 km/h)
45 mph (72.42 km/h)43.84 mph (70.55 km/h)
50 mph (80.47 km/h)48.71 mph (78.39 km/h)
55 mph (88.51 km/h)53.58 mph (86.23 km/h)
60 mph (96.56 km/h)58.45 mph (94.07 km/h)
65 mph (104.61 km/h)63.32 mph (101.91 km/h)
70 mph (112.65 km/h)68.19 mph (109.75 km/h)
75 mph (120.7 km/h)73.06 mph (117.59 km/h)
80 mph (128.75 km/h)77.93 mph (125.42 km/h)
85 mph (136.79 km/h)82.81 mph (133.26 km/h)
90 mph (144.84 km/h)87.68 mph (141.1 km/h)
95 mph (152.89 km/h)92.55 mph (148.94 km/h)
100 mph (160.93 km/h)97.42 mph (156.78 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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