Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/70r12 vs 110/70r11 Tire Comparison Side By Side
  110/70-12 110/70-11 Difference
Diameter inches (mm) 18.06 (458.8) 17.06 (433.4) -1 (-25.4) -5.5%
Width inches (mm) 4.33 (110) 4.33 (110) 0 (0) 0%
Circum. inches (mm) 56.75 (1441.36) 53.6 (1361.57) -3.14 (-79.8) -5.5%
Sidewall Height inches (mm) 3.03 (77) 3.03 (77) 0 (0) 0%
Revolutions per mile (km) 1116.54 (693.79) 1181.98 (734.45) 65.44 (40.66) 5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.89 mph (30.41 km/h)
25 mph (40.23 km/h)23.62 mph (38.01 km/h)
30 mph (48.28 km/h)28.34 mph (45.61 km/h)
35 mph (56.33 km/h)33.06 mph (53.21 km/h)
40 mph (64.37 km/h)37.79 mph (60.81 km/h)
45 mph (72.42 km/h)42.51 mph (68.41 km/h)
50 mph (80.47 km/h)47.23 mph (76.01 km/h)
55 mph (88.51 km/h)51.96 mph (83.61 km/h)
60 mph (96.56 km/h)56.68 mph (91.22 km/h)
65 mph (104.61 km/h)61.4 mph (98.82 km/h)
70 mph (112.65 km/h)66.12 mph (106.42 km/h)
75 mph (120.7 km/h)70.85 mph (114.02 km/h)
80 mph (128.75 km/h)75.57 mph (121.62 km/h)
85 mph (136.79 km/h)80.29 mph (129.22 km/h)
90 mph (144.84 km/h)85.02 mph (136.82 km/h)
95 mph (152.89 km/h)89.74 mph (144.42 km/h)
100 mph (160.93 km/h)94.46 mph (152.03 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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