Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
220/60r16 vs 215/50r17 Tire Comparison Side By Side
  220/60-16 215/50-17 Difference
Diameter inches (mm) 26.39 (670.4) 25.46 (646.8) -0.93 (-23.6) -3.5%
Width inches (mm) 8.66 (220) 8.46 (215) -0.2 (-5) -2.3%
Circum. inches (mm) 82.92 (2106.12) 80 (2031.98) -2.92 (-74.14) -3.5%
Sidewall Height inches (mm) 5.2 (132) 4.23 (107.5) -0.96 (-24.5) -18.6%
Revolutions per mile (km) 764.13 (474.81) 792.01 (492.13) 27.88 (17.32) 3.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.3 mph (31.05 km/h)
25 mph (40.23 km/h)24.12 mph (38.82 km/h)
30 mph (48.28 km/h)28.94 mph (46.58 km/h)
35 mph (56.33 km/h)33.77 mph (54.34 km/h)
40 mph (64.37 km/h)38.59 mph (62.11 km/h)
45 mph (72.42 km/h)43.42 mph (69.87 km/h)
50 mph (80.47 km/h)48.24 mph (77.63 km/h)
55 mph (88.51 km/h)53.06 mph (85.4 km/h)
60 mph (96.56 km/h)57.89 mph (93.16 km/h)
65 mph (104.61 km/h)62.71 mph (100.93 km/h)
70 mph (112.65 km/h)67.54 mph (108.69 km/h)
75 mph (120.7 km/h)72.36 mph (116.45 km/h)
80 mph (128.75 km/h)77.18 mph (124.22 km/h)
85 mph (136.79 km/h)82.01 mph (131.98 km/h)
90 mph (144.84 km/h)86.83 mph (139.74 km/h)
95 mph (152.89 km/h)91.66 mph (147.51 km/h)
100 mph (160.93 km/h)96.48 mph (155.27 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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