Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/55r16 vs 235/35r19 Tire Comparison Side By Side
  215/55-16 235/35-19 Difference
Diameter inches (mm) 25.31 (642.9) 25.48 (647.1) 0.17 (4.2) 0.7%
Width inches (mm) 8.46 (215) 9.25 (235) 0.79 (20) 9.3%
Circum. inches (mm) 79.52 (2019.73) 80.04 (2032.92) 0.52 (13.19) 0.7%
Sidewall Height inches (mm) 4.66 (118.25) 3.24 (82.25) -1.42 (-36) -30.4%
Revolutions per mile (km) 796.81 (495.11) 791.64 (491.9) -5.17 (-3.21) -0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.13 mph (32.4 km/h)
25 mph (40.23 km/h)25.16 mph (40.5 km/h)
30 mph (48.28 km/h)30.2 mph (48.6 km/h)
35 mph (56.33 km/h)35.23 mph (56.7 km/h)
40 mph (64.37 km/h)40.26 mph (64.79 km/h)
45 mph (72.42 km/h)45.29 mph (72.89 km/h)
50 mph (80.47 km/h)50.33 mph (80.99 km/h)
55 mph (88.51 km/h)55.36 mph (89.09 km/h)
60 mph (96.56 km/h)60.39 mph (97.19 km/h)
65 mph (104.61 km/h)65.42 mph (105.29 km/h)
70 mph (112.65 km/h)70.46 mph (113.39 km/h)
75 mph (120.7 km/h)75.49 mph (121.49 km/h)
80 mph (128.75 km/h)80.52 mph (129.59 km/h)
85 mph (136.79 km/h)85.56 mph (137.69 km/h)
90 mph (144.84 km/h)90.59 mph (145.79 km/h)
95 mph (152.89 km/h)95.62 mph (153.89 km/h)
100 mph (160.93 km/h)100.65 mph (161.99 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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