Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/50r10 vs 215/35r14 Tire Comparison Side By Side
  205/50-10 215/35-14 Difference
Diameter inches (mm) 18.07 (459) 19.93 (506.1) 1.85 (47.1) 10.3%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 56.77 (1441.99) 62.6 (1589.96) 5.83 (147.97) 10.3%
Sidewall Height inches (mm) 4.04 (102.5) 2.96 (75.25) -1.07 (-27.25) -26.6%
Revolutions per mile (km) 1116.06 (693.48) 1012.19 (628.95) -103.87 (-64.54) -9.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.05 mph (35.49 km/h)
25 mph (40.23 km/h)27.57 mph (44.36 km/h)
30 mph (48.28 km/h)33.08 mph (53.23 km/h)
35 mph (56.33 km/h)38.59 mph (62.11 km/h)
40 mph (64.37 km/h)44.1 mph (70.98 km/h)
45 mph (72.42 km/h)49.62 mph (79.85 km/h)
50 mph (80.47 km/h)55.13 mph (88.72 km/h)
55 mph (88.51 km/h)60.64 mph (97.6 km/h)
60 mph (96.56 km/h)66.16 mph (106.47 km/h)
65 mph (104.61 km/h)71.67 mph (115.34 km/h)
70 mph (112.65 km/h)77.18 mph (124.21 km/h)
75 mph (120.7 km/h)82.7 mph (133.09 km/h)
80 mph (128.75 km/h)88.21 mph (141.96 km/h)
85 mph (136.79 km/h)93.72 mph (150.83 km/h)
90 mph (144.84 km/h)99.24 mph (159.7 km/h)
95 mph (152.89 km/h)104.75 mph (168.58 km/h)
100 mph (160.93 km/h)110.26 mph (177.45 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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