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 335/30r16 Tire Comparison Side By Side
  315/45-16 335/30-16 Difference
Diameter inches (mm) 27.16 (689.9) 23.91 (607.4) -3.25 (-82.5) -12%
Width inches (mm) 12.4 (315) 13.19 (335) 0.79 (20) 6.3%
Circum. inches (mm) 85.33 (2167.38) 75.13 (1908.2) -10.2 (-259.18) -12%
Sidewall Height inches (mm) 5.58 (141.75) 3.96 (100.5) -1.62 (-41.25) -29.1%
Revolutions per mile (km) 742.53 (461.38) 843.38 (524.05) 100.85 (62.67) 13.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.61 mph (28.34 km/h)
25 mph (40.23 km/h)22.01 mph (35.42 km/h)
30 mph (48.28 km/h)26.41 mph (42.51 km/h)
35 mph (56.33 km/h)30.81 mph (49.59 km/h)
40 mph (64.37 km/h)35.22 mph (56.68 km/h)
45 mph (72.42 km/h)39.62 mph (63.76 km/h)
50 mph (80.47 km/h)44.02 mph (70.84 km/h)
55 mph (88.51 km/h)48.42 mph (77.93 km/h)
60 mph (96.56 km/h)52.83 mph (85.01 km/h)
65 mph (104.61 km/h)57.23 mph (92.1 km/h)
70 mph (112.65 km/h)61.63 mph (99.18 km/h)
75 mph (120.7 km/h)66.03 mph (106.27 km/h)
80 mph (128.75 km/h)70.43 mph (113.35 km/h)
85 mph (136.79 km/h)74.84 mph (120.44 km/h)
90 mph (144.84 km/h)79.24 mph (127.52 km/h)
95 mph (152.89 km/h)83.64 mph (134.61 km/h)
100 mph (160.93 km/h)88.04 mph (141.69 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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