Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/75r16 vs 260/75r16 Tire Comparison Side By Side
  255/75-16 260/75-16 Difference
Diameter inches (mm) 31.06 (788.9) 31.35 (796.4) 0.3 (7.5) 1%
Width inches (mm) 10.04 (255) 10.24 (260) 0.2 (5) 2%
Circum. inches (mm) 97.57 (2478.4) 98.5 (2501.96) 0.93 (23.56) 1%
Sidewall Height inches (mm) 7.53 (191.25) 7.68 (195) 0.15 (3.75) 2%
Revolutions per mile (km) 649.35 (403.48) 643.23 (399.69) -6.12 (-3.8) -0.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.19 mph (32.49 km/h)
25 mph (40.23 km/h)25.24 mph (40.62 km/h)
30 mph (48.28 km/h)30.29 mph (48.74 km/h)
35 mph (56.33 km/h)35.33 mph (56.86 km/h)
40 mph (64.37 km/h)40.38 mph (64.99 km/h)
45 mph (72.42 km/h)45.43 mph (73.11 km/h)
50 mph (80.47 km/h)50.48 mph (81.23 km/h)
55 mph (88.51 km/h)55.52 mph (89.36 km/h)
60 mph (96.56 km/h)60.57 mph (97.48 km/h)
65 mph (104.61 km/h)65.62 mph (105.6 km/h)
70 mph (112.65 km/h)70.67 mph (113.73 km/h)
75 mph (120.7 km/h)75.71 mph (121.85 km/h)
80 mph (128.75 km/h)80.76 mph (129.97 km/h)
85 mph (136.79 km/h)85.81 mph (138.09 km/h)
90 mph (144.84 km/h)90.86 mph (146.22 km/h)
95 mph (152.89 km/h)95.9 mph (154.34 km/h)
100 mph (160.93 km/h)100.95 mph (162.46 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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