Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r15 vs 160/65r15 Tire Comparison Side By Side
  160/60-15 160/65-15 Difference
Diameter inches (mm) 22.56 (573) 23.19 (589) 0.63 (16) 2.8%
Width inches (mm) 6.3 (160) 6.3 (160) 0 (0) 0%
Circum. inches (mm) 70.87 (1800.13) 72.85 (1850.4) 1.98 (50.27) 2.8%
Sidewall Height inches (mm) 3.78 (96) 4.09 (104) 0.31 (8) 8.3%
Revolutions per mile (km) 894.01 (555.51) 869.73 (540.42) -24.29 (-15.09) -2.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.56 mph (33.09 km/h)
25 mph (40.23 km/h)25.7 mph (41.36 km/h)
30 mph (48.28 km/h)30.84 mph (49.63 km/h)
35 mph (56.33 km/h)35.98 mph (57.9 km/h)
40 mph (64.37 km/h)41.12 mph (66.17 km/h)
45 mph (72.42 km/h)46.26 mph (74.44 km/h)
50 mph (80.47 km/h)51.4 mph (82.71 km/h)
55 mph (88.51 km/h)56.54 mph (90.99 km/h)
60 mph (96.56 km/h)61.68 mph (99.26 km/h)
65 mph (104.61 km/h)66.82 mph (107.53 km/h)
70 mph (112.65 km/h)71.95 mph (115.8 km/h)
75 mph (120.7 km/h)77.09 mph (124.07 km/h)
80 mph (128.75 km/h)82.23 mph (132.34 km/h)
85 mph (136.79 km/h)87.37 mph (140.61 km/h)
90 mph (144.84 km/h)92.51 mph (148.89 km/h)
95 mph (152.89 km/h)97.65 mph (157.16 km/h)
100 mph (160.93 km/h)102.79 mph (165.43 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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