Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/65r17 vs 205/75r17 Tire Comparison Side By Side
  205/65-17 205/75-17 Difference
Diameter inches (mm) 27.49 (698.3) 29.11 (739.3) 1.61 (41) 5.9%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 86.37 (2193.77) 91.44 (2322.58) 5.07 (128.81) 5.9%
Sidewall Height inches (mm) 5.25 (133.25) 6.05 (153.75) 0.81 (20.5) 15.4%
Revolutions per mile (km) 733.6 (455.83) 692.91 (430.55) -40.68 (-25.28) -5.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.17 mph (34.08 km/h)
25 mph (40.23 km/h)26.47 mph (42.6 km/h)
30 mph (48.28 km/h)31.76 mph (51.12 km/h)
35 mph (56.33 km/h)37.05 mph (59.63 km/h)
40 mph (64.37 km/h)42.35 mph (68.15 km/h)
45 mph (72.42 km/h)47.64 mph (76.67 km/h)
50 mph (80.47 km/h)52.94 mph (85.19 km/h)
55 mph (88.51 km/h)58.23 mph (93.71 km/h)
60 mph (96.56 km/h)63.52 mph (102.23 km/h)
65 mph (104.61 km/h)68.82 mph (110.75 km/h)
70 mph (112.65 km/h)74.11 mph (119.27 km/h)
75 mph (120.7 km/h)79.4 mph (127.79 km/h)
80 mph (128.75 km/h)84.7 mph (136.31 km/h)
85 mph (136.79 km/h)89.99 mph (144.83 km/h)
90 mph (144.84 km/h)95.28 mph (153.35 km/h)
95 mph (152.89 km/h)100.58 mph (161.86 km/h)
100 mph (160.93 km/h)105.87 mph (170.38 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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