Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/60r16 vs 250/60r16 Tire Comparison Side By Side
  245/60-16 250/60-16 Difference
Diameter inches (mm) 27.57 (700.4) 27.81 (706.4) 0.24 (6) 0.9%
Width inches (mm) 9.65 (245) 9.84 (250) 0.2 (5) 2%
Circum. inches (mm) 86.63 (2200.37) 87.37 (2219.22) 0.74 (18.85) 0.9%
Sidewall Height inches (mm) 5.79 (147) 5.91 (150) 0.12 (3) 2%
Revolutions per mile (km) 731.4 (454.47) 725.18 (450.61) -6.21 (-3.86) -0.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.17 mph (32.46 km/h)
25 mph (40.23 km/h)25.21 mph (40.58 km/h)
30 mph (48.28 km/h)30.26 mph (48.69 km/h)
35 mph (56.33 km/h)35.3 mph (56.81 km/h)
40 mph (64.37 km/h)40.34 mph (64.93 km/h)
45 mph (72.42 km/h)45.39 mph (73.04 km/h)
50 mph (80.47 km/h)50.43 mph (81.16 km/h)
55 mph (88.51 km/h)55.47 mph (89.27 km/h)
60 mph (96.56 km/h)60.51 mph (97.39 km/h)
65 mph (104.61 km/h)65.56 mph (105.5 km/h)
70 mph (112.65 km/h)70.6 mph (113.62 km/h)
75 mph (120.7 km/h)75.64 mph (121.74 km/h)
80 mph (128.75 km/h)80.69 mph (129.85 km/h)
85 mph (136.79 km/h)85.73 mph (137.97 km/h)
90 mph (144.84 km/h)90.77 mph (146.08 km/h)
95 mph (152.89 km/h)95.81 mph (154.2 km/h)
100 mph (160.93 km/h)100.86 mph (162.31 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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