Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/100r12 vs 110/80r10 Tire Comparison Side By Side
  110/100-12 110/80-10 Difference
Diameter inches (mm) 20.66 (524.8) 16.93 (430) -3.73 (-94.8) -18.1%
Width inches (mm) 4.33 (110) 4.33 (110) 0 (0) 0%
Circum. inches (mm) 64.91 (1648.71) 53.18 (1350.88) -11.73 (-297.82) -18.1%
Sidewall Height inches (mm) 4.33 (110) 3.46 (88) -0.87 (-22) -20%
Revolutions per mile (km) 976.12 (606.53) 1191.33 (740.25) 215.2 (133.72) 22%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)16.39 mph (26.37 km/h)
25 mph (40.23 km/h)20.48 mph (32.97 km/h)
30 mph (48.28 km/h)24.58 mph (39.56 km/h)
35 mph (56.33 km/h)28.68 mph (46.15 km/h)
40 mph (64.37 km/h)32.77 mph (52.75 km/h)
45 mph (72.42 km/h)36.87 mph (59.34 km/h)
50 mph (80.47 km/h)40.97 mph (65.93 km/h)
55 mph (88.51 km/h)45.06 mph (72.52 km/h)
60 mph (96.56 km/h)49.16 mph (79.12 km/h)
65 mph (104.61 km/h)53.26 mph (85.71 km/h)
70 mph (112.65 km/h)57.36 mph (92.3 km/h)
75 mph (120.7 km/h)61.45 mph (98.9 km/h)
80 mph (128.75 km/h)65.55 mph (105.49 km/h)
85 mph (136.79 km/h)69.65 mph (112.08 km/h)
90 mph (144.84 km/h)73.74 mph (118.68 km/h)
95 mph (152.89 km/h)77.84 mph (125.27 km/h)
100 mph (160.93 km/h)81.94 mph (131.86 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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