Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/80r16 vs 195/75r16 Tire Comparison Side By Side
  195/80-16 195/75-16 Difference
Diameter inches (mm) 28.28 (718.4) 27.52 (698.9) -0.77 (-19.5) -2.7%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 88.86 (2256.92) 86.44 (2195.66) -2.41 (-61.26) -2.7%
Sidewall Height inches (mm) 6.14 (156) 5.76 (146.25) -0.38 (-9.75) -6.3%
Revolutions per mile (km) 713.07 (443.08) 732.97 (455.44) 19.9 (12.36) 2.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.46 mph (31.31 km/h)
25 mph (40.23 km/h)24.32 mph (39.14 km/h)
30 mph (48.28 km/h)29.19 mph (46.97 km/h)
35 mph (56.33 km/h)34.05 mph (54.8 km/h)
40 mph (64.37 km/h)38.91 mph (62.63 km/h)
45 mph (72.42 km/h)43.78 mph (70.45 km/h)
50 mph (80.47 km/h)48.64 mph (78.28 km/h)
55 mph (88.51 km/h)53.51 mph (86.11 km/h)
60 mph (96.56 km/h)58.37 mph (93.94 km/h)
65 mph (104.61 km/h)63.24 mph (101.77 km/h)
70 mph (112.65 km/h)68.1 mph (109.6 km/h)
75 mph (120.7 km/h)72.96 mph (117.42 km/h)
80 mph (128.75 km/h)77.83 mph (125.25 km/h)
85 mph (136.79 km/h)82.69 mph (133.08 km/h)
90 mph (144.84 km/h)87.56 mph (140.91 km/h)
95 mph (152.89 km/h)92.42 mph (148.74 km/h)
100 mph (160.93 km/h)97.29 mph (156.57 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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