Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/45r22 vs 265/35r22 Tire Comparison Side By Side
  255/45-22 265/35-22 Difference
Diameter inches (mm) 31.04 (788.3) 29.3 (744.3) -1.73 (-44) -5.6%
Width inches (mm) 10.04 (255) 10.43 (265) 0.39 (10) 3.9%
Circum. inches (mm) 97.5 (2476.52) 92.06 (2338.29) -5.44 (-138.23) -5.6%
Sidewall Height inches (mm) 4.52 (114.75) 3.65 (92.75) -0.87 (-22) -19.2%
Revolutions per mile (km) 649.84 (403.79) 688.26 (427.66) 38.42 (23.87) 5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.88 mph (30.39 km/h)
25 mph (40.23 km/h)23.6 mph (37.99 km/h)
30 mph (48.28 km/h)28.33 mph (45.59 km/h)
35 mph (56.33 km/h)33.05 mph (53.18 km/h)
40 mph (64.37 km/h)37.77 mph (60.78 km/h)
45 mph (72.42 km/h)42.49 mph (68.38 km/h)
50 mph (80.47 km/h)47.21 mph (75.98 km/h)
55 mph (88.51 km/h)51.93 mph (83.57 km/h)
60 mph (96.56 km/h)56.65 mph (91.17 km/h)
65 mph (104.61 km/h)61.37 mph (98.77 km/h)
70 mph (112.65 km/h)66.09 mph (106.37 km/h)
75 mph (120.7 km/h)70.81 mph (113.96 km/h)
80 mph (128.75 km/h)75.53 mph (121.56 km/h)
85 mph (136.79 km/h)80.26 mph (129.16 km/h)
90 mph (144.84 km/h)84.98 mph (136.76 km/h)
95 mph (152.89 km/h)89.7 mph (144.35 km/h)
100 mph (160.93 km/h)94.42 mph (151.95 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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