Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r16 vs 295/55r20 Tire Comparison Side By Side
  205/55-16 295/55-20 Difference
Diameter inches (mm) 24.88 (631.9) 32.78 (832.5) 7.9 (200.6) 31.7%
Width inches (mm) 8.07 (205) 11.61 (295) 3.54 (90) 43.9%
Circum. inches (mm) 78.16 (1985.17) 102.97 (2615.38) 24.81 (630.2) 31.7%
Sidewall Height inches (mm) 4.44 (112.75) 6.39 (162.25) 1.95 (49.5) 43.9%
Revolutions per mile (km) 810.68 (503.73) 615.34 (382.35) -195.34 (-121.38) -24.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)26.35 mph (42.4 km/h)
25 mph (40.23 km/h)32.94 mph (53.01 km/h)
30 mph (48.28 km/h)39.52 mph (63.61 km/h)
35 mph (56.33 km/h)46.11 mph (74.21 km/h)
40 mph (64.37 km/h)52.7 mph (84.81 km/h)
45 mph (72.42 km/h)59.29 mph (95.41 km/h)
50 mph (80.47 km/h)65.87 mph (106.01 km/h)
55 mph (88.51 km/h)72.46 mph (116.61 km/h)
60 mph (96.56 km/h)79.05 mph (127.21 km/h)
65 mph (104.61 km/h)85.63 mph (137.82 km/h)
70 mph (112.65 km/h)92.22 mph (148.42 km/h)
75 mph (120.7 km/h)98.81 mph (159.02 km/h)
80 mph (128.75 km/h)105.4 mph (169.62 km/h)
85 mph (136.79 km/h)111.98 mph (180.22 km/h)
90 mph (144.84 km/h)118.57 mph (190.82 km/h)
95 mph (152.89 km/h)125.16 mph (201.42 km/h)
100 mph (160.93 km/h)131.75 mph (212.02 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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