Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r16 vs 255/35r19 Tire Comparison Side By Side
  135/70-16 255/35-19 Difference
Diameter inches (mm) 23.44 (595.4) 26.03 (661.1) 2.59 (65.7) 11%
Width inches (mm) 5.31 (135) 10.04 (255) 4.72 (120) 88.9%
Circum. inches (mm) 73.64 (1870.5) 81.77 (2076.91) 8.13 (206.4) 11%
Sidewall Height inches (mm) 3.72 (94.5) 3.51 (89.25) -0.21 (-5.25) -5.6%
Revolutions per mile (km) 860.38 (534.61) 774.88 (481.48) -85.5 (-53.13) -9.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.21 mph (35.74 km/h)
25 mph (40.23 km/h)27.76 mph (44.67 km/h)
30 mph (48.28 km/h)33.31 mph (53.61 km/h)
35 mph (56.33 km/h)38.86 mph (62.54 km/h)
40 mph (64.37 km/h)44.41 mph (71.48 km/h)
45 mph (72.42 km/h)49.97 mph (80.41 km/h)
50 mph (80.47 km/h)55.52 mph (89.35 km/h)
55 mph (88.51 km/h)61.07 mph (98.28 km/h)
60 mph (96.56 km/h)66.62 mph (107.22 km/h)
65 mph (104.61 km/h)72.17 mph (116.15 km/h)
70 mph (112.65 km/h)77.72 mph (125.09 km/h)
75 mph (120.7 km/h)83.28 mph (134.02 km/h)
80 mph (128.75 km/h)88.83 mph (142.95 km/h)
85 mph (136.79 km/h)94.38 mph (151.89 km/h)
90 mph (144.84 km/h)99.93 mph (160.82 km/h)
95 mph (152.89 km/h)105.48 mph (169.76 km/h)
100 mph (160.93 km/h)111.03 mph (178.69 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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