Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/82r15 vs 195/55r16 Tire Comparison Side By Side
  165/82-15 195/55-16 Difference
Diameter inches (mm) 25.65 (651.6) 24.44 (620.9) -1.21 (-30.7) -4.7%
Width inches (mm) 6.5 (165) 7.68 (195) 1.18 (30) 18.2%
Circum. inches (mm) 80.59 (2047.06) 76.8 (1950.61) -3.8 (-96.45) -4.7%
Sidewall Height inches (mm) 5.33 (135.3) 4.22 (107.25) -1.1 (-28.05) -20.7%
Revolutions per mile (km) 786.17 (488.5) 825.04 (512.66) 38.87 (24.15) 4.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.06 mph (30.67 km/h)
25 mph (40.23 km/h)23.82 mph (38.34 km/h)
30 mph (48.28 km/h)28.59 mph (46.01 km/h)
35 mph (56.33 km/h)33.35 mph (53.67 km/h)
40 mph (64.37 km/h)38.12 mph (61.34 km/h)
45 mph (72.42 km/h)42.88 mph (69.01 km/h)
50 mph (80.47 km/h)47.64 mph (76.68 km/h)
55 mph (88.51 km/h)52.41 mph (84.34 km/h)
60 mph (96.56 km/h)57.17 mph (92.01 km/h)
65 mph (104.61 km/h)61.94 mph (99.68 km/h)
70 mph (112.65 km/h)66.7 mph (107.35 km/h)
75 mph (120.7 km/h)71.47 mph (115.01 km/h)
80 mph (128.75 km/h)76.23 mph (122.68 km/h)
85 mph (136.79 km/h)81 mph (130.35 km/h)
90 mph (144.84 km/h)85.76 mph (138.02 km/h)
95 mph (152.89 km/h)90.52 mph (145.68 km/h)
100 mph (160.93 km/h)95.29 mph (153.35 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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