Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/85r16 vs 225/95r16 Tire Comparison Side By Side
  225/85-16 225/95-16 Difference
Diameter inches (mm) 31.06 (788.9) 32.83 (833.9) 1.77 (45) 5.7%
Width inches (mm) 8.86 (225) 8.86 (225) 0 (0) 0%
Circum. inches (mm) 97.57 (2478.4) 103.14 (2619.77) 5.57 (141.37) 5.7%
Sidewall Height inches (mm) 7.53 (191.25) 8.42 (213.75) 0.89 (22.5) 11.8%
Revolutions per mile (km) 649.35 (403.48) 614.31 (381.71) -35.04 (-21.77) -5.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.14 mph (34.02 km/h)
25 mph (40.23 km/h)26.43 mph (42.53 km/h)
30 mph (48.28 km/h)31.71 mph (51.03 km/h)
35 mph (56.33 km/h)37 mph (59.54 km/h)
40 mph (64.37 km/h)42.28 mph (68.05 km/h)
45 mph (72.42 km/h)47.57 mph (76.55 km/h)
50 mph (80.47 km/h)52.85 mph (85.06 km/h)
55 mph (88.51 km/h)58.14 mph (93.56 km/h)
60 mph (96.56 km/h)63.42 mph (102.07 km/h)
65 mph (104.61 km/h)68.71 mph (110.57 km/h)
70 mph (112.65 km/h)73.99 mph (119.08 km/h)
75 mph (120.7 km/h)79.28 mph (127.59 km/h)
80 mph (128.75 km/h)84.56 mph (136.09 km/h)
85 mph (136.79 km/h)89.85 mph (144.6 km/h)
90 mph (144.84 km/h)95.13 mph (153.1 km/h)
95 mph (152.89 km/h)100.42 mph (161.61 km/h)
100 mph (160.93 km/h)105.7 mph (170.11 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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