Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r15 vs 135/70r10 Tire Comparison Side By Side
  135/70-15 135/70-10 Difference
Diameter inches (mm) 22.44 (570) 17.44 (443) -5 (-127) -22.3%
Width inches (mm) 5.31 (135) 5.31 (135) 0 (0) 0%
Circum. inches (mm) 70.5 (1790.71) 54.79 (1391.73) -15.71 (-398.98) -22.3%
Sidewall Height inches (mm) 3.72 (94.5) 3.72 (94.5) 0 (0) 0%
Revolutions per mile (km) 898.72 (558.44) 1156.37 (718.53) 257.65 (160.09) 28.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)15.54 mph (25.02 km/h)
25 mph (40.23 km/h)19.43 mph (31.27 km/h)
30 mph (48.28 km/h)23.32 mph (37.52 km/h)
35 mph (56.33 km/h)27.2 mph (43.78 km/h)
40 mph (64.37 km/h)31.09 mph (50.03 km/h)
45 mph (72.42 km/h)34.97 mph (56.28 km/h)
50 mph (80.47 km/h)38.86 mph (62.54 km/h)
55 mph (88.51 km/h)42.75 mph (68.79 km/h)
60 mph (96.56 km/h)46.63 mph (75.05 km/h)
65 mph (104.61 km/h)50.52 mph (81.3 km/h)
70 mph (112.65 km/h)54.4 mph (87.55 km/h)
75 mph (120.7 km/h)58.29 mph (93.81 km/h)
80 mph (128.75 km/h)62.18 mph (100.06 km/h)
85 mph (136.79 km/h)66.06 mph (106.32 km/h)
90 mph (144.84 km/h)69.95 mph (112.57 km/h)
95 mph (152.89 km/h)73.83 mph (118.82 km/h)
100 mph (160.93 km/h)77.72 mph (125.08 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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