Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/60r17 vs 160/40r17 Tire Comparison Side By Side
  130/60-17 160/40-17 Difference
Diameter inches (mm) 23.14 (587.8) 22.04 (559.8) -1.1 (-28) -4.8%
Width inches (mm) 5.12 (130) 6.3 (160) 1.18 (30) 23.1%
Circum. inches (mm) 72.7 (1846.63) 69.24 (1758.66) -3.46 (-87.96) -4.8%
Sidewall Height inches (mm) 3.07 (78) 2.52 (64) -0.55 (-14) -17.9%
Revolutions per mile (km) 871.5 (541.53) 915.09 (568.61) 43.59 (27.09) 5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.05 mph (30.65 km/h)
25 mph (40.23 km/h)23.81 mph (38.32 km/h)
30 mph (48.28 km/h)28.57 mph (45.98 km/h)
35 mph (56.33 km/h)33.33 mph (53.64 km/h)
40 mph (64.37 km/h)38.09 mph (61.31 km/h)
45 mph (72.42 km/h)42.86 mph (68.97 km/h)
50 mph (80.47 km/h)47.62 mph (76.63 km/h)
55 mph (88.51 km/h)52.38 mph (84.3 km/h)
60 mph (96.56 km/h)57.14 mph (91.96 km/h)
65 mph (104.61 km/h)61.9 mph (99.62 km/h)
70 mph (112.65 km/h)66.67 mph (107.29 km/h)
75 mph (120.7 km/h)71.43 mph (114.95 km/h)
80 mph (128.75 km/h)76.19 mph (122.61 km/h)
85 mph (136.79 km/h)80.95 mph (130.28 km/h)
90 mph (144.84 km/h)85.71 mph (137.94 km/h)
95 mph (152.89 km/h)90.47 mph (145.61 km/h)
100 mph (160.93 km/h)95.24 mph (153.27 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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