Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r15 vs 195/50r15 Tire Comparison Side By Side
  160/60-15 195/50-15 Difference
Diameter inches (mm) 22.56 (573) 22.68 (576) 0.12 (3) 0.5%
Width inches (mm) 6.3 (160) 7.68 (195) 1.38 (35) 21.9%
Circum. inches (mm) 70.87 (1800.13) 71.24 (1809.56) 0.37 (9.42) 0.5%
Sidewall Height inches (mm) 3.78 (96) 3.84 (97.5) 0.06 (1.5) 1.6%
Revolutions per mile (km) 894.01 (555.51) 889.36 (552.62) -4.66 (-2.89) -0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.1 mph (32.36 km/h)
25 mph (40.23 km/h)25.13 mph (40.44 km/h)
30 mph (48.28 km/h)30.16 mph (48.53 km/h)
35 mph (56.33 km/h)35.18 mph (56.62 km/h)
40 mph (64.37 km/h)40.21 mph (64.71 km/h)
45 mph (72.42 km/h)45.24 mph (72.8 km/h)
50 mph (80.47 km/h)50.26 mph (80.89 km/h)
55 mph (88.51 km/h)55.29 mph (88.98 km/h)
60 mph (96.56 km/h)60.31 mph (97.07 km/h)
65 mph (104.61 km/h)65.34 mph (105.16 km/h)
70 mph (112.65 km/h)70.37 mph (113.24 km/h)
75 mph (120.7 km/h)75.39 mph (121.33 km/h)
80 mph (128.75 km/h)80.42 mph (129.42 km/h)
85 mph (136.79 km/h)85.45 mph (137.51 km/h)
90 mph (144.84 km/h)90.47 mph (145.6 km/h)
95 mph (152.89 km/h)95.5 mph (153.69 km/h)
100 mph (160.93 km/h)100.52 mph (161.78 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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