Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/70r16 vs 195/55r16 Tire Comparison Side By Side
  215/70-16 195/55-16 Difference
Diameter inches (mm) 27.85 (707.4) 24.44 (620.9) -3.41 (-86.5) -12.2%
Width inches (mm) 8.46 (215) 7.68 (195) -0.79 (-20) -9.3%
Circum. inches (mm) 87.49 (2222.36) 76.8 (1950.61) -10.7 (-271.75) -12.2%
Sidewall Height inches (mm) 5.93 (150.5) 4.22 (107.25) -1.7 (-43.25) -28.7%
Revolutions per mile (km) 724.16 (449.97) 825.04 (512.66) 100.89 (62.69) 13.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.55 mph (28.25 km/h)
25 mph (40.23 km/h)21.94 mph (35.31 km/h)
30 mph (48.28 km/h)26.33 mph (42.38 km/h)
35 mph (56.33 km/h)30.72 mph (49.44 km/h)
40 mph (64.37 km/h)35.11 mph (56.5 km/h)
45 mph (72.42 km/h)39.5 mph (63.57 km/h)
50 mph (80.47 km/h)43.89 mph (70.63 km/h)
55 mph (88.51 km/h)48.27 mph (77.69 km/h)
60 mph (96.56 km/h)52.66 mph (84.75 km/h)
65 mph (104.61 km/h)57.05 mph (91.82 km/h)
70 mph (112.65 km/h)61.44 mph (98.88 km/h)
75 mph (120.7 km/h)65.83 mph (105.94 km/h)
80 mph (128.75 km/h)70.22 mph (113 km/h)
85 mph (136.79 km/h)74.61 mph (120.07 km/h)
90 mph (144.84 km/h)78.99 mph (127.13 km/h)
95 mph (152.89 km/h)83.38 mph (134.19 km/h)
100 mph (160.93 km/h)87.77 mph (141.26 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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