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 36/13r17 Tire Comparison Side By Side
  345/35-19 36/13-17 Difference
Diameter inches (mm) 28.51 (724.1) 35.97 (913.6) 7.46 (189.5) 26.2%
Width inches (mm) 13.58 (345) 12.99 (330) -0.59 (-15) -4.3%
Circum. inches (mm) 89.56 (2274.83) 113 (2870.16) 23.44 (595.33) 26.2%
Sidewall Height inches (mm) 4.75 (120.75) 9.48 (240.9) 4.73 (120.15) 99.5%
Revolutions per mile (km) 707.46 (439.59) 560.72 (348.41) -146.74 (-91.18) -20.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.23 mph (40.61 km/h)
25 mph (40.23 km/h)31.54 mph (50.76 km/h)
30 mph (48.28 km/h)37.85 mph (60.92 km/h)
35 mph (56.33 km/h)44.16 mph (71.07 km/h)
40 mph (64.37 km/h)50.47 mph (81.22 km/h)
45 mph (72.42 km/h)56.78 mph (91.37 km/h)
50 mph (80.47 km/h)63.09 mph (101.53 km/h)
55 mph (88.51 km/h)69.39 mph (111.68 km/h)
60 mph (96.56 km/h)75.7 mph (121.83 km/h)
65 mph (104.61 km/h)82.01 mph (131.98 km/h)
70 mph (112.65 km/h)88.32 mph (142.14 km/h)
75 mph (120.7 km/h)94.63 mph (152.29 km/h)
80 mph (128.75 km/h)100.94 mph (162.44 km/h)
85 mph (136.79 km/h)107.24 mph (172.59 km/h)
90 mph (144.84 km/h)113.55 mph (182.75 km/h)
95 mph (152.89 km/h)119.86 mph (192.9 km/h)
100 mph (160.93 km/h)126.17 mph (203.05 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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