Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/70r16 vs 215/60r16 Tire Comparison Side By Side
  215/70-16 215/60-16 Difference
Diameter inches (mm) 27.85 (707.4) 26.16 (664.4) -1.69 (-43) -6.1%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 87.49 (2222.36) 82.18 (2087.27) -5.32 (-135.09) -6.1%
Sidewall Height inches (mm) 5.93 (150.5) 5.08 (129) -0.85 (-21.5) -14.3%
Revolutions per mile (km) 724.16 (449.97) 771.03 (479.09) 46.87 (29.12) 6.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.78 mph (30.23 km/h)
25 mph (40.23 km/h)23.48 mph (37.79 km/h)
30 mph (48.28 km/h)28.18 mph (45.35 km/h)
35 mph (56.33 km/h)32.87 mph (52.9 km/h)
40 mph (64.37 km/h)37.57 mph (60.46 km/h)
45 mph (72.42 km/h)42.26 mph (68.02 km/h)
50 mph (80.47 km/h)46.96 mph (75.58 km/h)
55 mph (88.51 km/h)51.66 mph (83.13 km/h)
60 mph (96.56 km/h)56.35 mph (90.69 km/h)
65 mph (104.61 km/h)61.05 mph (98.25 km/h)
70 mph (112.65 km/h)65.74 mph (105.81 km/h)
75 mph (120.7 km/h)70.44 mph (113.36 km/h)
80 mph (128.75 km/h)75.14 mph (120.92 km/h)
85 mph (136.79 km/h)79.83 mph (128.48 km/h)
90 mph (144.84 km/h)84.53 mph (136.04 km/h)
95 mph (152.89 km/h)89.23 mph (143.59 km/h)
100 mph (160.93 km/h)93.92 mph (151.15 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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