Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/65r16 vs 215/55r16 Tire Comparison Side By Side
  205/65-16 215/55-16 Difference
Diameter inches (mm) 26.49 (672.9) 25.31 (642.9) -1.18 (-30) -4.5%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 83.23 (2113.98) 79.52 (2019.73) -3.71 (-94.25) -4.5%
Sidewall Height inches (mm) 5.25 (133.25) 4.66 (118.25) -0.59 (-15) -11.3%
Revolutions per mile (km) 761.29 (473.04) 796.81 (495.11) 35.52 (22.07) 4.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.11 mph (30.75 km/h)
25 mph (40.23 km/h)23.89 mph (38.44 km/h)
30 mph (48.28 km/h)28.66 mph (46.13 km/h)
35 mph (56.33 km/h)33.44 mph (53.82 km/h)
40 mph (64.37 km/h)38.22 mph (61.5 km/h)
45 mph (72.42 km/h)42.99 mph (69.19 km/h)
50 mph (80.47 km/h)47.77 mph (76.88 km/h)
55 mph (88.51 km/h)52.55 mph (84.57 km/h)
60 mph (96.56 km/h)57.33 mph (92.26 km/h)
65 mph (104.61 km/h)62.1 mph (99.94 km/h)
70 mph (112.65 km/h)66.88 mph (107.63 km/h)
75 mph (120.7 km/h)71.66 mph (115.32 km/h)
80 mph (128.75 km/h)76.43 mph (123.01 km/h)
85 mph (136.79 km/h)81.21 mph (130.7 km/h)
90 mph (144.84 km/h)85.99 mph (138.38 km/h)
95 mph (152.89 km/h)90.76 mph (146.07 km/h)
100 mph (160.93 km/h)95.54 mph (153.76 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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