Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/70r16 vs 205/60r16 Tire Comparison Side By Side
  205/70-16 205/60-16 Difference
Diameter inches (mm) 27.3 (693.4) 25.69 (652.4) -1.61 (-41) -5.9%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 85.76 (2178.38) 80.69 (2049.58) -5.07 (-128.81) -5.9%
Sidewall Height inches (mm) 5.65 (143.5) 4.84 (123) -0.81 (-20.5) -14.3%
Revolutions per mile (km) 738.78 (459.06) 785.21 (487.91) 46.43 (28.85) 6.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.82 mph (30.28 km/h)
25 mph (40.23 km/h)23.52 mph (37.85 km/h)
30 mph (48.28 km/h)28.23 mph (45.43 km/h)
35 mph (56.33 km/h)32.93 mph (53 km/h)
40 mph (64.37 km/h)37.63 mph (60.57 km/h)
45 mph (72.42 km/h)42.34 mph (68.14 km/h)
50 mph (80.47 km/h)47.04 mph (75.71 km/h)
55 mph (88.51 km/h)51.75 mph (83.28 km/h)
60 mph (96.56 km/h)56.45 mph (90.85 km/h)
65 mph (104.61 km/h)61.16 mph (98.42 km/h)
70 mph (112.65 km/h)65.86 mph (105.99 km/h)
75 mph (120.7 km/h)70.57 mph (113.56 km/h)
80 mph (128.75 km/h)75.27 mph (121.14 km/h)
85 mph (136.79 km/h)79.97 mph (128.71 km/h)
90 mph (144.84 km/h)84.68 mph (136.28 km/h)
95 mph (152.89 km/h)89.38 mph (143.85 km/h)
100 mph (160.93 km/h)94.09 mph (151.42 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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