Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r16 vs 235/35r16 Tire Comparison Side By Side
  215/35-16 235/35-16 Difference
Diameter inches (mm) 21.93 (556.9) 22.48 (570.9) 0.55 (14) 2.5%
Width inches (mm) 8.46 (215) 9.25 (235) 0.79 (20) 9.3%
Circum. inches (mm) 68.88 (1749.55) 70.61 (1793.54) 1.73 (43.98) 2.5%
Sidewall Height inches (mm) 2.96 (75.25) 3.24 (82.25) 0.28 (7) 9.3%
Revolutions per mile (km) 919.86 (571.57) 897.3 (557.56) -22.56 (-14.02) -2.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.5 mph (33 km/h)
25 mph (40.23 km/h)25.63 mph (41.25 km/h)
30 mph (48.28 km/h)30.75 mph (49.49 km/h)
35 mph (56.33 km/h)35.88 mph (57.74 km/h)
40 mph (64.37 km/h)41.01 mph (65.99 km/h)
45 mph (72.42 km/h)46.13 mph (74.24 km/h)
50 mph (80.47 km/h)51.26 mph (82.49 km/h)
55 mph (88.51 km/h)56.38 mph (90.74 km/h)
60 mph (96.56 km/h)61.51 mph (98.99 km/h)
65 mph (104.61 km/h)66.63 mph (107.24 km/h)
70 mph (112.65 km/h)71.76 mph (115.49 km/h)
75 mph (120.7 km/h)76.89 mph (123.74 km/h)
80 mph (128.75 km/h)82.01 mph (131.98 km/h)
85 mph (136.79 km/h)87.14 mph (140.23 km/h)
90 mph (144.84 km/h)92.26 mph (148.48 km/h)
95 mph (152.89 km/h)97.39 mph (156.73 km/h)
100 mph (160.93 km/h)102.51 mph (164.98 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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