Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/60r16 vs 205/65r16 Tire Comparison Side By Side
  215/60-16 205/65-16 Difference
Diameter inches (mm) 26.16 (664.4) 26.49 (672.9) 0.33 (8.5) 1.3%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 82.18 (2087.27) 83.23 (2113.98) 1.05 (26.7) 1.3%
Sidewall Height inches (mm) 5.08 (129) 5.25 (133.25) 0.17 (4.25) 3.3%
Revolutions per mile (km) 771.03 (479.09) 761.29 (473.04) -9.74 (-6.05) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.26 mph (32.6 km/h)
25 mph (40.23 km/h)25.32 mph (40.75 km/h)
30 mph (48.28 km/h)30.38 mph (48.9 km/h)
35 mph (56.33 km/h)35.45 mph (57.05 km/h)
40 mph (64.37 km/h)40.51 mph (65.2 km/h)
45 mph (72.42 km/h)45.58 mph (73.35 km/h)
50 mph (80.47 km/h)50.64 mph (81.5 km/h)
55 mph (88.51 km/h)55.7 mph (89.65 km/h)
60 mph (96.56 km/h)60.77 mph (97.8 km/h)
65 mph (104.61 km/h)65.83 mph (105.95 km/h)
70 mph (112.65 km/h)70.9 mph (114.1 km/h)
75 mph (120.7 km/h)75.96 mph (122.25 km/h)
80 mph (128.75 km/h)81.02 mph (130.39 km/h)
85 mph (136.79 km/h)86.09 mph (138.54 km/h)
90 mph (144.84 km/h)91.15 mph (146.69 km/h)
95 mph (152.89 km/h)96.22 mph (154.84 km/h)
100 mph (160.93 km/h)101.28 mph (162.99 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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