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 215/50r17 Tire Comparison Side By Side
  215/60-16 215/50-17 Difference
Diameter inches (mm) 26.16 (664.4) 25.46 (646.8) -0.69 (-17.6) -2.6%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 82.18 (2087.27) 80 (2031.98) -2.18 (-55.29) -2.6%
Sidewall Height inches (mm) 5.08 (129) 4.23 (107.5) -0.85 (-21.5) -16.7%
Revolutions per mile (km) 771.03 (479.09) 792.01 (492.13) 20.98 (13.04) 2.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.47 mph (31.33 km/h)
25 mph (40.23 km/h)24.34 mph (39.17 km/h)
30 mph (48.28 km/h)29.21 mph (47 km/h)
35 mph (56.33 km/h)34.07 mph (54.84 km/h)
40 mph (64.37 km/h)38.94 mph (62.67 km/h)
45 mph (72.42 km/h)43.81 mph (70.5 km/h)
50 mph (80.47 km/h)48.68 mph (78.34 km/h)
55 mph (88.51 km/h)53.54 mph (86.17 km/h)
60 mph (96.56 km/h)58.41 mph (94 km/h)
65 mph (104.61 km/h)63.28 mph (101.84 km/h)
70 mph (112.65 km/h)68.15 mph (109.67 km/h)
75 mph (120.7 km/h)73.01 mph (117.5 km/h)
80 mph (128.75 km/h)77.88 mph (125.34 km/h)
85 mph (136.79 km/h)82.75 mph (133.17 km/h)
90 mph (144.84 km/h)87.62 mph (141 km/h)
95 mph (152.89 km/h)92.48 mph (148.84 km/h)
100 mph (160.93 km/h)97.35 mph (156.67 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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