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 215/75r16 Tire Comparison Side By Side
  215/60-16 215/75-16 Difference
Diameter inches (mm) 26.16 (664.4) 28.7 (728.9) 2.54 (64.5) 9.7%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 82.18 (2087.27) 90.15 (2289.91) 7.98 (202.63) 9.7%
Sidewall Height inches (mm) 5.08 (129) 6.35 (161.25) 1.27 (32.25) 25%
Revolutions per mile (km) 771.03 (479.09) 702.8 (436.7) -68.23 (-42.39) -8.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.94 mph (35.31 km/h)
25 mph (40.23 km/h)27.43 mph (44.14 km/h)
30 mph (48.28 km/h)32.91 mph (52.97 km/h)
35 mph (56.33 km/h)38.4 mph (61.8 km/h)
40 mph (64.37 km/h)43.88 mph (70.62 km/h)
45 mph (72.42 km/h)49.37 mph (79.45 km/h)
50 mph (80.47 km/h)54.85 mph (88.28 km/h)
55 mph (88.51 km/h)60.34 mph (97.11 km/h)
60 mph (96.56 km/h)65.82 mph (105.93 km/h)
65 mph (104.61 km/h)71.31 mph (114.76 km/h)
70 mph (112.65 km/h)76.8 mph (123.59 km/h)
75 mph (120.7 km/h)82.28 mph (132.42 km/h)
80 mph (128.75 km/h)87.77 mph (141.25 km/h)
85 mph (136.79 km/h)93.25 mph (150.07 km/h)
90 mph (144.84 km/h)98.74 mph (158.9 km/h)
95 mph (152.89 km/h)104.22 mph (167.73 km/h)
100 mph (160.93 km/h)109.71 mph (176.56 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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