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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r13 vs 135/80r13 Tire Comparison Side By Side
  135/70-13 135/80-13 Difference
Diameter inches (mm) 20.44 (519.2) 21.5 (546.2) 1.06 (27) 5.2%
Width inches (mm) 5.31 (135) 5.31 (135) 0 (0) 0%
Circum. inches (mm) 64.22 (1631.11) 67.56 (1715.94) 3.34 (84.82) 5.2%
Sidewall Height inches (mm) 3.72 (94.5) 4.25 (108) 0.53 (13.5) 14.3%
Revolutions per mile (km) 986.65 (613.08) 937.88 (582.77) -48.77 (-30.31) -4.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.04 mph (33.86 km/h)
25 mph (40.23 km/h)26.3 mph (42.33 km/h)
30 mph (48.28 km/h)31.56 mph (50.79 km/h)
35 mph (56.33 km/h)36.82 mph (59.26 km/h)
40 mph (64.37 km/h)42.08 mph (67.72 km/h)
45 mph (72.42 km/h)47.34 mph (76.19 km/h)
50 mph (80.47 km/h)52.6 mph (84.65 km/h)
55 mph (88.51 km/h)57.86 mph (93.12 km/h)
60 mph (96.56 km/h)63.12 mph (101.58 km/h)
65 mph (104.61 km/h)68.38 mph (110.05 km/h)
70 mph (112.65 km/h)73.64 mph (118.51 km/h)
75 mph (120.7 km/h)78.9 mph (126.98 km/h)
80 mph (128.75 km/h)84.16 mph (135.44 km/h)
85 mph (136.79 km/h)89.42 mph (143.91 km/h)
90 mph (144.84 km/h)94.68 mph (152.37 km/h)
95 mph (152.89 km/h)99.94 mph (160.84 km/h)
100 mph (160.93 km/h)105.2 mph (169.3 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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