Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r17 vs 205/55r17 Tire Comparison Side By Side
  195/60-17 205/55-17 Difference
Diameter inches (mm) 26.21 (665.8) 25.88 (657.3) -0.33 (-8.5) -1.3%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 82.35 (2091.67) 81.3 (2064.97) -1.05 (-26.7) -1.3%
Sidewall Height inches (mm) 4.61 (117) 4.44 (112.75) -0.17 (-4.25) -3.6%
Revolutions per mile (km) 769.41 (478.09) 779.36 (484.27) 9.95 (6.18) 1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.74 mph (31.78 km/h)
25 mph (40.23 km/h)24.68 mph (39.72 km/h)
30 mph (48.28 km/h)29.62 mph (47.66 km/h)
35 mph (56.33 km/h)34.55 mph (55.61 km/h)
40 mph (64.37 km/h)39.49 mph (63.55 km/h)
45 mph (72.42 km/h)44.43 mph (71.5 km/h)
50 mph (80.47 km/h)49.36 mph (79.44 km/h)
55 mph (88.51 km/h)54.3 mph (87.38 km/h)
60 mph (96.56 km/h)59.23 mph (95.33 km/h)
65 mph (104.61 km/h)64.17 mph (103.27 km/h)
70 mph (112.65 km/h)69.11 mph (111.22 km/h)
75 mph (120.7 km/h)74.04 mph (119.16 km/h)
80 mph (128.75 km/h)78.98 mph (127.1 km/h)
85 mph (136.79 km/h)83.91 mph (135.05 km/h)
90 mph (144.84 km/h)88.85 mph (142.99 km/h)
95 mph (152.89 km/h)93.79 mph (150.94 km/h)
100 mph (160.93 km/h)98.72 mph (158.88 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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