Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r20 vs 275/35r20 Tire Comparison Side By Side
  295/25-20 275/35-20 Difference
Diameter inches (mm) 25.81 (655.5) 27.58 (700.5) 1.77 (45) 6.9%
Width inches (mm) 11.61 (295) 10.83 (275) -0.79 (-20) -6.8%
Circum. inches (mm) 81.08 (2059.31) 86.64 (2200.69) 5.57 (141.37) 6.9%
Sidewall Height inches (mm) 2.9 (73.75) 3.79 (96.25) 0.89 (22.5) 30.5%
Revolutions per mile (km) 781.5 (485.6) 731.29 (454.4) -50.2 (-31.19) -6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.37 mph (34.4 km/h)
25 mph (40.23 km/h)26.72 mph (43 km/h)
30 mph (48.28 km/h)32.06 mph (51.59 km/h)
35 mph (56.33 km/h)37.4 mph (60.19 km/h)
40 mph (64.37 km/h)42.75 mph (68.79 km/h)
45 mph (72.42 km/h)48.09 mph (77.39 km/h)
50 mph (80.47 km/h)53.43 mph (85.99 km/h)
55 mph (88.51 km/h)58.78 mph (94.59 km/h)
60 mph (96.56 km/h)64.12 mph (103.19 km/h)
65 mph (104.61 km/h)69.46 mph (111.79 km/h)
70 mph (112.65 km/h)74.81 mph (120.39 km/h)
75 mph (120.7 km/h)80.15 mph (128.99 km/h)
80 mph (128.75 km/h)85.49 mph (137.59 km/h)
85 mph (136.79 km/h)90.84 mph (146.19 km/h)
90 mph (144.84 km/h)96.18 mph (154.78 km/h)
95 mph (152.89 km/h)101.52 mph (163.38 km/h)
100 mph (160.93 km/h)106.86 mph (171.98 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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