Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/65r16 vs 195/55r16 Tire Comparison Side By Side
  205/65-16 195/55-16 Difference
Diameter inches (mm) 26.49 (672.9) 24.44 (620.9) -2.05 (-52) -7.7%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 83.23 (2113.98) 76.8 (1950.61) -6.43 (-163.36) -7.7%
Sidewall Height inches (mm) 5.25 (133.25) 4.22 (107.25) -1.02 (-26) -19.5%
Revolutions per mile (km) 761.29 (473.04) 825.04 (512.66) 63.76 (39.62) 8.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.45 mph (29.7 km/h)
25 mph (40.23 km/h)23.07 mph (37.12 km/h)
30 mph (48.28 km/h)27.68 mph (44.55 km/h)
35 mph (56.33 km/h)32.3 mph (51.97 km/h)
40 mph (64.37 km/h)36.91 mph (59.4 km/h)
45 mph (72.42 km/h)41.52 mph (66.82 km/h)
50 mph (80.47 km/h)46.14 mph (74.25 km/h)
55 mph (88.51 km/h)50.75 mph (81.67 km/h)
60 mph (96.56 km/h)55.36 mph (89.1 km/h)
65 mph (104.61 km/h)59.98 mph (96.52 km/h)
70 mph (112.65 km/h)64.59 mph (103.95 km/h)
75 mph (120.7 km/h)69.2 mph (111.37 km/h)
80 mph (128.75 km/h)73.82 mph (118.8 km/h)
85 mph (136.79 km/h)78.43 mph (126.22 km/h)
90 mph (144.84 km/h)83.05 mph (133.65 km/h)
95 mph (152.89 km/h)87.66 mph (141.07 km/h)
100 mph (160.93 km/h)92.27 mph (148.5 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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