Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/75r16 vs 215/60r16 Tire Comparison Side By Side
  215/75-16 215/60-16 Difference
Diameter inches (mm) 28.7 (728.9) 26.16 (664.4) -2.54 (-64.5) -8.8%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 90.15 (2289.91) 82.18 (2087.27) -7.98 (-202.63) -8.8%
Sidewall Height inches (mm) 6.35 (161.25) 5.08 (129) -1.27 (-32.25) -20%
Revolutions per mile (km) 702.8 (436.7) 771.03 (479.09) 68.23 (42.39) 9.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.23 mph (29.34 km/h)
25 mph (40.23 km/h)22.79 mph (36.67 km/h)
30 mph (48.28 km/h)27.35 mph (44.01 km/h)
35 mph (56.33 km/h)31.9 mph (51.34 km/h)
40 mph (64.37 km/h)36.46 mph (58.68 km/h)
45 mph (72.42 km/h)41.02 mph (66.01 km/h)
50 mph (80.47 km/h)45.58 mph (73.35 km/h)
55 mph (88.51 km/h)50.13 mph (80.68 km/h)
60 mph (96.56 km/h)54.69 mph (88.02 km/h)
65 mph (104.61 km/h)59.25 mph (95.35 km/h)
70 mph (112.65 km/h)63.81 mph (102.69 km/h)
75 mph (120.7 km/h)68.36 mph (110.02 km/h)
80 mph (128.75 km/h)72.92 mph (117.35 km/h)
85 mph (136.79 km/h)77.48 mph (124.69 km/h)
90 mph (144.84 km/h)82.04 mph (132.02 km/h)
95 mph (152.89 km/h)86.59 mph (139.36 km/h)
100 mph (160.93 km/h)91.15 mph (146.69 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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