Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r16 vs 195/50r16 Tire Comparison Side By Side
  195/60-16 195/50-16 Difference
Diameter inches (mm) 25.21 (640.4) 23.68 (601.4) -1.54 (-39) -6.1%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 79.21 (2011.88) 74.38 (1889.35) -4.82 (-122.52) -6.1%
Sidewall Height inches (mm) 4.61 (117) 3.84 (97.5) -0.77 (-19.5) -16.7%
Revolutions per mile (km) 799.92 (497.05) 851.8 (529.28) 51.87 (32.23) 6.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.78 mph (30.23 km/h)
25 mph (40.23 km/h)23.48 mph (37.78 km/h)
30 mph (48.28 km/h)28.17 mph (45.34 km/h)
35 mph (56.33 km/h)32.87 mph (52.9 km/h)
40 mph (64.37 km/h)37.56 mph (60.45 km/h)
45 mph (72.42 km/h)42.26 mph (68.01 km/h)
50 mph (80.47 km/h)46.96 mph (75.57 km/h)
55 mph (88.51 km/h)51.65 mph (83.12 km/h)
60 mph (96.56 km/h)56.35 mph (90.68 km/h)
65 mph (104.61 km/h)61.04 mph (98.24 km/h)
70 mph (112.65 km/h)65.74 mph (105.79 km/h)
75 mph (120.7 km/h)70.43 mph (113.35 km/h)
80 mph (128.75 km/h)75.13 mph (120.91 km/h)
85 mph (136.79 km/h)79.82 mph (128.46 km/h)
90 mph (144.84 km/h)84.52 mph (136.02 km/h)
95 mph (152.89 km/h)89.21 mph (143.58 km/h)
100 mph (160.93 km/h)93.91 mph (151.13 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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