Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r16 vs 165/35r16 Tire Comparison Side By Side
  215/35-16 165/35-16 Difference
Diameter inches (mm) 21.93 (556.9) 20.55 (521.9) -1.38 (-35) -6.3%
Width inches (mm) 8.46 (215) 6.5 (165) -1.97 (-50) -23.3%
Circum. inches (mm) 68.88 (1749.55) 64.55 (1639.6) -4.33 (-109.96) -6.3%
Sidewall Height inches (mm) 2.96 (75.25) 2.27 (57.75) -0.69 (-17.5) -23.3%
Revolutions per mile (km) 919.86 (571.57) 981.55 (609.9) 61.69 (38.33) 6.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.74 mph (30.16 km/h)
25 mph (40.23 km/h)23.43 mph (37.71 km/h)
30 mph (48.28 km/h)28.11 mph (45.25 km/h)
35 mph (56.33 km/h)32.8 mph (52.79 km/h)
40 mph (64.37 km/h)37.49 mph (60.33 km/h)
45 mph (72.42 km/h)42.17 mph (67.87 km/h)
50 mph (80.47 km/h)46.86 mph (75.41 km/h)
55 mph (88.51 km/h)51.54 mph (82.95 km/h)
60 mph (96.56 km/h)56.23 mph (90.49 km/h)
65 mph (104.61 km/h)60.91 mph (98.03 km/h)
70 mph (112.65 km/h)65.6 mph (105.57 km/h)
75 mph (120.7 km/h)70.29 mph (113.12 km/h)
80 mph (128.75 km/h)74.97 mph (120.66 km/h)
85 mph (136.79 km/h)79.66 mph (128.2 km/h)
90 mph (144.84 km/h)84.34 mph (135.74 km/h)
95 mph (152.89 km/h)89.03 mph (143.28 km/h)
100 mph (160.93 km/h)93.72 mph (150.82 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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