Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r19 vs 215/30r19 Tire Comparison Side By Side
  215/35-19 215/30-19 Difference
Diameter inches (mm) 24.93 (633.1) 24.08 (611.6) -0.85 (-21.5) -3.4%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 78.3 (1988.94) 75.65 (1921.4) -2.66 (-67.54) -3.4%
Sidewall Height inches (mm) 2.96 (75.25) 2.54 (64.5) -0.42 (-10.75) -14.3%
Revolutions per mile (km) 809.15 (502.78) 837.59 (520.45) 28.44 (17.67) 3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.32 mph (31.09 km/h)
25 mph (40.23 km/h)24.15 mph (38.87 km/h)
30 mph (48.28 km/h)28.98 mph (46.64 km/h)
35 mph (56.33 km/h)33.81 mph (54.41 km/h)
40 mph (64.37 km/h)38.64 mph (62.19 km/h)
45 mph (72.42 km/h)43.47 mph (69.96 km/h)
50 mph (80.47 km/h)48.3 mph (77.73 km/h)
55 mph (88.51 km/h)53.13 mph (85.51 km/h)
60 mph (96.56 km/h)57.96 mph (93.28 km/h)
65 mph (104.61 km/h)62.79 mph (101.06 km/h)
70 mph (112.65 km/h)67.62 mph (108.83 km/h)
75 mph (120.7 km/h)72.45 mph (116.6 km/h)
80 mph (128.75 km/h)77.28 mph (124.38 km/h)
85 mph (136.79 km/h)82.11 mph (132.15 km/h)
90 mph (144.84 km/h)86.94 mph (139.92 km/h)
95 mph (152.89 km/h)91.77 mph (147.7 km/h)
100 mph (160.93 km/h)96.6 mph (155.47 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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