Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
345/35r19 vs 335/85r16 Tire Comparison Side By Side
  345/35-19 335/85-16 Difference
Diameter inches (mm) 28.51 (724.1) 38.42 (975.9) 9.91 (251.8) 34.8%
Width inches (mm) 13.58 (345) 13.19 (335) -0.39 (-10) -2.9%
Circum. inches (mm) 89.56 (2274.83) 120.7 (3065.88) 31.14 (791.05) 34.8%
Sidewall Height inches (mm) 4.75 (120.75) 11.21 (284.75) 6.46 (164) 135.8%
Revolutions per mile (km) 707.46 (439.59) 524.92 (326.17) -182.54 (-113.42) -25.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)26.95 mph (43.38 km/h)
25 mph (40.23 km/h)33.69 mph (54.22 km/h)
30 mph (48.28 km/h)40.43 mph (65.07 km/h)
35 mph (56.33 km/h)47.17 mph (75.91 km/h)
40 mph (64.37 km/h)53.91 mph (86.76 km/h)
45 mph (72.42 km/h)60.65 mph (97.6 km/h)
50 mph (80.47 km/h)67.39 mph (108.45 km/h)
55 mph (88.51 km/h)74.13 mph (119.29 km/h)
60 mph (96.56 km/h)80.86 mph (130.14 km/h)
65 mph (104.61 km/h)87.6 mph (140.98 km/h)
70 mph (112.65 km/h)94.34 mph (151.83 km/h)
75 mph (120.7 km/h)101.08 mph (162.67 km/h)
80 mph (128.75 km/h)107.82 mph (173.52 km/h)
85 mph (136.79 km/h)114.56 mph (184.36 km/h)
90 mph (144.84 km/h)121.3 mph (195.21 km/h)
95 mph (152.89 km/h)128.04 mph (206.05 km/h)
100 mph (160.93 km/h)134.77 mph (216.9 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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