Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/35r18 vs 205/45r16 Tire Comparison Side By Side
  205/35-18 205/45-16 Difference
Diameter inches (mm) 23.65 (600.7) 23.26 (590.9) -0.39 (-9.8) -1.6%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 74.3 (1887.15) 73.09 (1856.37) -1.21 (-30.79) -1.6%
Sidewall Height inches (mm) 2.82 (71.75) 3.63 (92.25) 0.81 (20.5) 28.6%
Revolutions per mile (km) 852.79 (529.9) 866.93 (538.69) 14.14 (8.79) 1.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.67 mph (31.66 km/h)
25 mph (40.23 km/h)24.59 mph (39.58 km/h)
30 mph (48.28 km/h)29.51 mph (47.49 km/h)
35 mph (56.33 km/h)34.43 mph (55.41 km/h)
40 mph (64.37 km/h)39.35 mph (63.32 km/h)
45 mph (72.42 km/h)44.27 mph (71.24 km/h)
50 mph (80.47 km/h)49.18 mph (79.15 km/h)
55 mph (88.51 km/h)54.1 mph (87.07 km/h)
60 mph (96.56 km/h)59.02 mph (94.99 km/h)
65 mph (104.61 km/h)63.94 mph (102.9 km/h)
70 mph (112.65 km/h)68.86 mph (110.82 km/h)
75 mph (120.7 km/h)73.78 mph (118.73 km/h)
80 mph (128.75 km/h)78.69 mph (126.65 km/h)
85 mph (136.79 km/h)83.61 mph (134.56 km/h)
90 mph (144.84 km/h)88.53 mph (142.48 km/h)
95 mph (152.89 km/h)93.45 mph (150.39 km/h)
100 mph (160.93 km/h)98.37 mph (158.31 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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