Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r14 vs 205/70r14 Tire Comparison Side By Side
  195/60-14 205/70-14 Difference
Diameter inches (mm) 23.21 (589.6) 25.3 (642.6) 2.09 (53) 9%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 72.92 (1852.28) 79.48 (2018.79) 6.56 (166.5) 9%
Sidewall Height inches (mm) 4.61 (117) 5.65 (143.5) 1.04 (26.5) 22.6%
Revolutions per mile (km) 868.84 (539.87) 797.18 (495.35) -71.66 (-44.53) -8.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.8 mph (35.08 km/h)
25 mph (40.23 km/h)27.25 mph (43.85 km/h)
30 mph (48.28 km/h)32.7 mph (52.62 km/h)
35 mph (56.33 km/h)38.15 mph (61.39 km/h)
40 mph (64.37 km/h)43.6 mph (70.16 km/h)
45 mph (72.42 km/h)49.05 mph (78.93 km/h)
50 mph (80.47 km/h)54.49 mph (87.7 km/h)
55 mph (88.51 km/h)59.94 mph (96.47 km/h)
60 mph (96.56 km/h)65.39 mph (105.24 km/h)
65 mph (104.61 km/h)70.84 mph (114.01 km/h)
70 mph (112.65 km/h)76.29 mph (122.78 km/h)
75 mph (120.7 km/h)81.74 mph (131.55 km/h)
80 mph (128.75 km/h)87.19 mph (140.32 km/h)
85 mph (136.79 km/h)92.64 mph (149.09 km/h)
90 mph (144.84 km/h)98.09 mph (157.86 km/h)
95 mph (152.89 km/h)103.54 mph (166.63 km/h)
100 mph (160.93 km/h)108.99 mph (175.4 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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