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 195/60r15 Tire Comparison Side By Side
  165/82-15 195/60-15 Difference
Diameter inches (mm) 25.65 (651.6) 24.21 (615) -1.44 (-36.6) -5.6%
Width inches (mm) 6.5 (165) 7.68 (195) 1.18 (30) 18.2%
Circum. inches (mm) 80.59 (2047.06) 76.07 (1932.08) -4.53 (-114.98) -5.6%
Sidewall Height inches (mm) 5.33 (135.3) 4.61 (117) -0.72 (-18.3) -13.5%
Revolutions per mile (km) 786.17 (488.5) 832.96 (517.58) 46.79 (29.07) 6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.88 mph (30.38 km/h)
25 mph (40.23 km/h)23.6 mph (37.97 km/h)
30 mph (48.28 km/h)28.31 mph (45.57 km/h)
35 mph (56.33 km/h)33.03 mph (53.16 km/h)
40 mph (64.37 km/h)37.75 mph (60.76 km/h)
45 mph (72.42 km/h)42.47 mph (68.35 km/h)
50 mph (80.47 km/h)47.19 mph (75.95 km/h)
55 mph (88.51 km/h)51.91 mph (83.54 km/h)
60 mph (96.56 km/h)56.63 mph (91.14 km/h)
65 mph (104.61 km/h)61.35 mph (98.73 km/h)
70 mph (112.65 km/h)66.07 mph (106.33 km/h)
75 mph (120.7 km/h)70.79 mph (113.92 km/h)
80 mph (128.75 km/h)75.51 mph (121.52 km/h)
85 mph (136.79 km/h)80.23 mph (129.11 km/h)
90 mph (144.84 km/h)84.94 mph (136.71 km/h)
95 mph (152.89 km/h)89.66 mph (144.3 km/h)
100 mph (160.93 km/h)94.38 mph (151.9 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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