Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
315/45r16 vs 355/35r19 Tire Comparison Side By Side
  315/45-16 355/35-19 Difference
Diameter inches (mm) 27.16 (689.9) 28.78 (731.1) 1.62 (41.2) 6%
Width inches (mm) 12.4 (315) 13.98 (355) 1.57 (40) 12.7%
Circum. inches (mm) 85.33 (2167.38) 90.43 (2296.82) 5.1 (129.43) 6%
Sidewall Height inches (mm) 5.58 (141.75) 4.89 (124.25) -0.69 (-17.5) -12.3%
Revolutions per mile (km) 742.53 (461.38) 700.68 (435.38) -41.84 (-26) -5.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.19 mph (34.11 km/h)
25 mph (40.23 km/h)26.49 mph (42.64 km/h)
30 mph (48.28 km/h)31.79 mph (51.16 km/h)
35 mph (56.33 km/h)37.09 mph (59.69 km/h)
40 mph (64.37 km/h)42.39 mph (68.22 km/h)
45 mph (72.42 km/h)47.69 mph (76.75 km/h)
50 mph (80.47 km/h)52.99 mph (85.27 km/h)
55 mph (88.51 km/h)58.28 mph (93.8 km/h)
60 mph (96.56 km/h)63.58 mph (102.33 km/h)
65 mph (104.61 km/h)68.88 mph (110.85 km/h)
70 mph (112.65 km/h)74.18 mph (119.38 km/h)
75 mph (120.7 km/h)79.48 mph (127.91 km/h)
80 mph (128.75 km/h)84.78 mph (136.44 km/h)
85 mph (136.79 km/h)90.08 mph (144.96 km/h)
90 mph (144.84 km/h)95.37 mph (153.49 km/h)
95 mph (152.89 km/h)100.67 mph (162.02 km/h)
100 mph (160.93 km/h)105.97 mph (170.55 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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