Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/55r17 vs 240/45r17 Tire Comparison Side By Side
  200/55-17 240/45-17 Difference
Diameter inches (mm) 25.66 (651.8) 25.5 (647.8) -0.16 (-4) -0.6%
Width inches (mm) 7.87 (200) 9.45 (240) 1.57 (40) 20%
Circum. inches (mm) 80.62 (2047.69) 80.12 (2035.12) -0.49 (-12.57) -0.6%
Sidewall Height inches (mm) 4.33 (110) 4.25 (108) -0.08 (-2) -1.8%
Revolutions per mile (km) 785.93 (488.35) 790.78 (491.37) 4.85 (3.02) 0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.88 mph (31.99 km/h)
25 mph (40.23 km/h)24.85 mph (39.99 km/h)
30 mph (48.28 km/h)29.82 mph (47.98 km/h)
35 mph (56.33 km/h)34.79 mph (55.98 km/h)
40 mph (64.37 km/h)39.75 mph (63.98 km/h)
45 mph (72.42 km/h)44.72 mph (71.98 km/h)
50 mph (80.47 km/h)49.69 mph (79.97 km/h)
55 mph (88.51 km/h)54.66 mph (87.97 km/h)
60 mph (96.56 km/h)59.63 mph (95.97 km/h)
65 mph (104.61 km/h)64.6 mph (103.97 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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