Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/60r16 vs 275/70r16 Tire Comparison Side By Side
  275/60-16 275/70-16 Difference
Diameter inches (mm) 28.99 (736.4) 31.16 (791.4) 2.17 (55) 7.5%
Width inches (mm) 10.83 (275) 10.83 (275) 0 (0) 0%
Circum. inches (mm) 91.08 (2313.47) 97.88 (2486.26) 6.8 (172.79) 7.5%
Sidewall Height inches (mm) 6.5 (165) 7.58 (192.5) 1.08 (27.5) 16.7%
Revolutions per mile (km) 695.64 (432.25) 647.3 (402.21) -48.35 (-30.04) -6.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.49 mph (34.59 km/h)
25 mph (40.23 km/h)26.87 mph (43.24 km/h)
30 mph (48.28 km/h)32.24 mph (51.89 km/h)
35 mph (56.33 km/h)37.61 mph (60.53 km/h)
40 mph (64.37 km/h)42.99 mph (69.18 km/h)
45 mph (72.42 km/h)48.36 mph (77.83 km/h)
50 mph (80.47 km/h)53.73 mph (86.48 km/h)
55 mph (88.51 km/h)59.11 mph (95.13 km/h)
60 mph (96.56 km/h)64.48 mph (103.77 km/h)
65 mph (104.61 km/h)69.85 mph (112.42 km/h)
70 mph (112.65 km/h)75.23 mph (121.07 km/h)
75 mph (120.7 km/h)80.6 mph (129.72 km/h)
80 mph (128.75 km/h)85.98 mph (138.36 km/h)
85 mph (136.79 km/h)91.35 mph (147.01 km/h)
90 mph (144.84 km/h)96.72 mph (155.66 km/h)
95 mph (152.89 km/h)102.1 mph (164.31 km/h)
100 mph (160.93 km/h)107.47 mph (172.95 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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