Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/60r14 vs 205/60r14 Tire Comparison Side By Side
  215/60-14 205/60-14 Difference
Diameter inches (mm) 24.16 (613.6) 23.69 (601.6) -0.47 (-12) -2%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 75.89 (1927.68) 74.41 (1889.98) -1.48 (-37.7) -2%
Sidewall Height inches (mm) 5.08 (129) 4.84 (123) -0.24 (-6) -4.7%
Revolutions per mile (km) 834.86 (518.76) 851.51 (529.1) 16.65 (10.35) 2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.61 mph (31.56 km/h)
25 mph (40.23 km/h)24.51 mph (39.45 km/h)
30 mph (48.28 km/h)29.41 mph (47.34 km/h)
35 mph (56.33 km/h)34.32 mph (55.23 km/h)
40 mph (64.37 km/h)39.22 mph (63.11 km/h)
45 mph (72.42 km/h)44.12 mph (71 km/h)
50 mph (80.47 km/h)49.02 mph (78.89 km/h)
55 mph (88.51 km/h)53.92 mph (86.78 km/h)
60 mph (96.56 km/h)58.83 mph (94.67 km/h)
65 mph (104.61 km/h)63.73 mph (102.56 km/h)
70 mph (112.65 km/h)68.63 mph (110.45 km/h)
75 mph (120.7 km/h)73.53 mph (118.34 km/h)
80 mph (128.75 km/h)78.44 mph (126.23 km/h)
85 mph (136.79 km/h)83.34 mph (134.12 km/h)
90 mph (144.84 km/h)88.24 mph (142.01 km/h)
95 mph (152.89 km/h)93.14 mph (149.9 km/h)
100 mph (160.93 km/h)98.04 mph (157.79 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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