Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/80r10 vs 110/80r10 Tire Comparison Side By Side
  100/80-10 110/80-10 Difference
Diameter inches (mm) 16.3 (414) 16.93 (430) 0.63 (16) 3.9%
Width inches (mm) 3.94 (100) 4.33 (110) 0.39 (10) 10%
Circum. inches (mm) 51.21 (1300.62) 53.18 (1350.88) 1.98 (50.27) 3.9%
Sidewall Height inches (mm) 3.15 (80) 3.46 (88) 0.31 (8) 10%
Revolutions per mile (km) 1237.37 (768.86) 1191.33 (740.25) -46.04 (-28.61) -3.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.77 mph (33.43 km/h)
25 mph (40.23 km/h)25.97 mph (41.79 km/h)
30 mph (48.28 km/h)31.16 mph (50.15 km/h)
35 mph (56.33 km/h)36.35 mph (58.5 km/h)
40 mph (64.37 km/h)41.55 mph (66.86 km/h)
45 mph (72.42 km/h)46.74 mph (75.22 km/h)
50 mph (80.47 km/h)51.93 mph (83.58 km/h)
55 mph (88.51 km/h)57.13 mph (91.93 km/h)
60 mph (96.56 km/h)62.32 mph (100.29 km/h)
65 mph (104.61 km/h)67.51 mph (108.65 km/h)
70 mph (112.65 km/h)72.71 mph (117.01 km/h)
75 mph (120.7 km/h)77.9 mph (125.37 km/h)
80 mph (128.75 km/h)83.09 mph (133.72 km/h)
85 mph (136.79 km/h)88.29 mph (142.08 km/h)
90 mph (144.84 km/h)93.48 mph (150.44 km/h)
95 mph (152.89 km/h)98.67 mph (158.8 km/h)
100 mph (160.93 km/h)103.86 mph (167.15 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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