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 235/36r16 Tire Comparison Side By Side
  215/35-16 235/36-16 Difference
Diameter inches (mm) 21.93 (556.9) 22.66 (575.6) 0.74 (18.7) 3.4%
Width inches (mm) 8.46 (215) 9.25 (235) 0.79 (20) 9.3%
Circum. inches (mm) 68.88 (1749.55) 71.19 (1808.3) 2.31 (58.75) 3.4%
Sidewall Height inches (mm) 2.96 (75.25) 3.33 (84.6) 0.37 (9.35) 12.4%
Revolutions per mile (km) 919.86 (571.57) 889.98 (553) -29.88 (-18.57) -3.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.67 mph (33.27 km/h)
25 mph (40.23 km/h)25.84 mph (41.58 km/h)
30 mph (48.28 km/h)31.01 mph (49.9 km/h)
35 mph (56.33 km/h)36.18 mph (58.22 km/h)
40 mph (64.37 km/h)41.34 mph (66.54 km/h)
45 mph (72.42 km/h)46.51 mph (74.85 km/h)
50 mph (80.47 km/h)51.68 mph (83.17 km/h)
55 mph (88.51 km/h)56.85 mph (91.49 km/h)
60 mph (96.56 km/h)62.01 mph (99.8 km/h)
65 mph (104.61 km/h)67.18 mph (108.12 km/h)
70 mph (112.65 km/h)72.35 mph (116.44 km/h)
75 mph (120.7 km/h)77.52 mph (124.75 km/h)
80 mph (128.75 km/h)82.69 mph (133.07 km/h)
85 mph (136.79 km/h)87.85 mph (141.39 km/h)
90 mph (144.84 km/h)93.02 mph (149.7 km/h)
95 mph (152.89 km/h)98.19 mph (158.02 km/h)
100 mph (160.93 km/h)103.36 mph (166.34 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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