Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/90r16 vs 135/35r19 Tire Comparison Side By Side
  135/90-16 135/35-19 Difference
Diameter inches (mm) 25.57 (649.4) 22.72 (577.1) -2.85 (-72.3) -11.1%
Width inches (mm) 5.31 (135) 5.31 (135) 0 (0) 0%
Circum. inches (mm) 80.32 (2040.15) 71.38 (1813.01) -8.94 (-227.14) -11.1%
Sidewall Height inches (mm) 4.78 (121.5) 1.86 (47.25) -2.92 (-74.25) -61.1%
Revolutions per mile (km) 788.84 (490.16) 887.66 (551.57) 98.83 (61.41) 12.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.77 mph (28.6 km/h)
25 mph (40.23 km/h)22.22 mph (35.75 km/h)
30 mph (48.28 km/h)26.66 mph (42.91 km/h)
35 mph (56.33 km/h)31.1 mph (50.06 km/h)
40 mph (64.37 km/h)35.55 mph (57.21 km/h)
45 mph (72.42 km/h)39.99 mph (64.36 km/h)
50 mph (80.47 km/h)44.43 mph (71.51 km/h)
55 mph (88.51 km/h)48.88 mph (78.66 km/h)
60 mph (96.56 km/h)53.32 mph (85.81 km/h)
65 mph (104.61 km/h)57.76 mph (92.96 km/h)
70 mph (112.65 km/h)62.21 mph (100.11 km/h)
75 mph (120.7 km/h)66.65 mph (107.26 km/h)
80 mph (128.75 km/h)71.09 mph (114.41 km/h)
85 mph (136.79 km/h)75.54 mph (121.56 km/h)
90 mph (144.84 km/h)79.98 mph (128.72 km/h)
95 mph (152.89 km/h)84.42 mph (135.87 km/h)
100 mph (160.93 km/h)88.87 mph (143.02 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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