Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/55r16 vs 215/45r16 Tire Comparison Side By Side
  195/55-16 215/45-16 Difference
Diameter inches (mm) 24.44 (620.9) 23.62 (599.9) -0.83 (-21) -3.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 76.8 (1950.61) 74.2 (1884.64) -2.6 (-65.97) -3.4%
Sidewall Height inches (mm) 4.22 (107.25) 3.81 (96.75) -0.41 (-10.5) -9.8%
Revolutions per mile (km) 825.04 (512.66) 853.93 (530.6) 28.88 (17.95) 3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.32 mph (31.1 km/h)
25 mph (40.23 km/h)24.15 mph (38.87 km/h)
30 mph (48.28 km/h)28.99 mph (46.65 km/h)
35 mph (56.33 km/h)33.82 mph (54.42 km/h)
40 mph (64.37 km/h)38.65 mph (62.2 km/h)
45 mph (72.42 km/h)43.48 mph (69.97 km/h)
50 mph (80.47 km/h)48.31 mph (77.75 km/h)
55 mph (88.51 km/h)53.14 mph (85.52 km/h)
60 mph (96.56 km/h)57.97 mph (93.29 km/h)
65 mph (104.61 km/h)62.8 mph (101.07 km/h)
70 mph (112.65 km/h)67.63 mph (108.84 km/h)
75 mph (120.7 km/h)72.46 mph (116.62 km/h)
80 mph (128.75 km/h)77.29 mph (124.39 km/h)
85 mph (136.79 km/h)82.13 mph (132.17 km/h)
90 mph (144.84 km/h)86.96 mph (139.94 km/h)
95 mph (152.89 km/h)91.79 mph (147.72 km/h)
100 mph (160.93 km/h)96.62 mph (155.49 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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