Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/35r19 vs 215/35r19 Tire Comparison Side By Side
  235/35-19 215/35-19 Difference
Diameter inches (mm) 25.48 (647.1) 24.93 (633.1) -0.55 (-14) -2.2%
Width inches (mm) 9.25 (235) 8.46 (215) -0.79 (-20) -8.5%
Circum. inches (mm) 80.04 (2032.92) 78.3 (1988.94) -1.73 (-43.98) -2.2%
Sidewall Height inches (mm) 3.24 (82.25) 2.96 (75.25) -0.28 (-7) -8.5%
Revolutions per mile (km) 791.64 (491.9) 809.15 (502.78) 17.51 (10.88) 2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.57 mph (31.49 km/h)
25 mph (40.23 km/h)24.46 mph (39.36 km/h)
30 mph (48.28 km/h)29.35 mph (47.24 km/h)
35 mph (56.33 km/h)34.24 mph (55.11 km/h)
40 mph (64.37 km/h)39.13 mph (62.98 km/h)
45 mph (72.42 km/h)44.03 mph (70.85 km/h)
50 mph (80.47 km/h)48.92 mph (78.73 km/h)
55 mph (88.51 km/h)53.81 mph (86.6 km/h)
60 mph (96.56 km/h)58.7 mph (94.47 km/h)
65 mph (104.61 km/h)63.59 mph (102.34 km/h)
70 mph (112.65 km/h)68.49 mph (110.22 km/h)
75 mph (120.7 km/h)73.38 mph (118.09 km/h)
80 mph (128.75 km/h)78.27 mph (125.96 km/h)
85 mph (136.79 km/h)83.16 mph (133.83 km/h)
90 mph (144.84 km/h)88.05 mph (141.71 km/h)
95 mph (152.89 km/h)92.94 mph (149.58 km/h)
100 mph (160.93 km/h)97.84 mph (157.45 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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