Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/85r19 vs 110/85r16 Tire Comparison Side By Side
  100/85-19 110/85-16 Difference
Diameter inches (mm) 25.69 (652.6) 23.36 (593.4) -2.33 (-59.2) -9.1%
Width inches (mm) 3.94 (100) 4.33 (110) 0.39 (10) 10%
Circum. inches (mm) 80.72 (2050.2) 73.39 (1864.22) -7.32 (-185.98) -9.1%
Sidewall Height inches (mm) 3.35 (85) 3.68 (93.5) 0.33 (8.5) 10%
Revolutions per mile (km) 784.97 (487.76) 863.28 (536.42) 78.31 (48.66) 10%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.19 mph (29.27 km/h)
25 mph (40.23 km/h)22.73 mph (36.58 km/h)
30 mph (48.28 km/h)27.28 mph (43.9 km/h)
35 mph (56.33 km/h)31.83 mph (51.22 km/h)
40 mph (64.37 km/h)36.37 mph (58.53 km/h)
45 mph (72.42 km/h)40.92 mph (65.85 km/h)
50 mph (80.47 km/h)45.46 mph (73.17 km/h)
55 mph (88.51 km/h)50.01 mph (80.48 km/h)
60 mph (96.56 km/h)54.56 mph (87.8 km/h)
65 mph (104.61 km/h)59.1 mph (95.12 km/h)
70 mph (112.65 km/h)63.65 mph (102.43 km/h)
75 mph (120.7 km/h)68.2 mph (109.75 km/h)
80 mph (128.75 km/h)72.74 mph (117.07 km/h)
85 mph (136.79 km/h)77.29 mph (124.39 km/h)
90 mph (144.84 km/h)81.84 mph (131.7 km/h)
95 mph (152.89 km/h)86.38 mph (139.02 km/h)
100 mph (160.93 km/h)90.93 mph (146.34 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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