Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r19 vs 265/70r17 Tire Comparison Side By Side
  295/45-19 265/70-17 Difference
Diameter inches (mm) 29.45 (748.1) 31.61 (802.8) 2.15 (54.7) 7.3%
Width inches (mm) 11.61 (295) 10.43 (265) -1.18 (-30) -10.2%
Circum. inches (mm) 92.53 (2350.23) 99.29 (2522.07) 6.77 (171.85) 7.3%
Sidewall Height inches (mm) 5.23 (132.75) 7.3 (185.5) 2.08 (52.75) 39.7%
Revolutions per mile (km) 684.76 (425.49) 638.1 (396.5) -46.66 (-28.99) -6.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.46 mph (34.54 km/h)
25 mph (40.23 km/h)26.83 mph (43.18 km/h)
30 mph (48.28 km/h)32.19 mph (51.81 km/h)
35 mph (56.33 km/h)37.56 mph (60.45 km/h)
40 mph (64.37 km/h)42.92 mph (69.08 km/h)
45 mph (72.42 km/h)48.29 mph (77.72 km/h)
50 mph (80.47 km/h)53.66 mph (86.35 km/h)
55 mph (88.51 km/h)59.02 mph (94.99 km/h)
60 mph (96.56 km/h)64.39 mph (103.62 km/h)
65 mph (104.61 km/h)69.75 mph (112.26 km/h)
70 mph (112.65 km/h)75.12 mph (120.89 km/h)
75 mph (120.7 km/h)80.48 mph (129.53 km/h)
80 mph (128.75 km/h)85.85 mph (138.16 km/h)
85 mph (136.79 km/h)91.22 mph (146.8 km/h)
90 mph (144.84 km/h)96.58 mph (155.43 km/h)
95 mph (152.89 km/h)101.95 mph (164.07 km/h)
100 mph (160.93 km/h)107.31 mph (172.7 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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