Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r17 vs 215/50r17 Tire Comparison Side By Side
  215/35-17 215/50-17 Difference
Diameter inches (mm) 22.93 (582.3) 25.46 (646.8) 2.54 (64.5) 11.1%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 72.02 (1829.35) 80 (2031.98) 7.98 (202.63) 11.1%
Sidewall Height inches (mm) 2.96 (75.25) 4.23 (107.5) 1.27 (32.25) 42.9%
Revolutions per mile (km) 879.74 (546.64) 792.01 (492.13) -87.73 (-54.51) -10%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.22 mph (35.75 km/h)
25 mph (40.23 km/h)27.77 mph (44.69 km/h)
30 mph (48.28 km/h)33.32 mph (53.63 km/h)
35 mph (56.33 km/h)38.88 mph (62.57 km/h)
40 mph (64.37 km/h)44.43 mph (71.5 km/h)
45 mph (72.42 km/h)49.98 mph (80.44 km/h)
50 mph (80.47 km/h)55.54 mph (89.38 km/h)
55 mph (88.51 km/h)61.09 mph (98.32 km/h)
60 mph (96.56 km/h)66.65 mph (107.26 km/h)
65 mph (104.61 km/h)72.2 mph (116.19 km/h)
70 mph (112.65 km/h)77.75 mph (125.13 km/h)
75 mph (120.7 km/h)83.31 mph (134.07 km/h)
80 mph (128.75 km/h)88.86 mph (143.01 km/h)
85 mph (136.79 km/h)94.42 mph (151.95 km/h)
90 mph (144.84 km/h)99.97 mph (160.88 km/h)
95 mph (152.89 km/h)105.52 mph (169.82 km/h)
100 mph (160.93 km/h)111.08 mph (178.76 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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