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 345/60r24 Tire Comparison Side By Side
  345/35-19 345/60-24 Difference
Diameter inches (mm) 28.51 (724.1) 40.3 (1023.6) 11.79 (299.5) 41.4%
Width inches (mm) 13.58 (345) 13.58 (345) 0 (0) 0%
Circum. inches (mm) 89.56 (2274.83) 126.6 (3215.73) 37.04 (940.91) 41.4%
Sidewall Height inches (mm) 4.75 (120.75) 8.15 (207) 3.4 (86.25) 71.4%
Revolutions per mile (km) 707.46 (439.59) 500.46 (310.97) -207 (-128.62) -29.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)28.27 mph (45.5 km/h)
25 mph (40.23 km/h)35.34 mph (56.88 km/h)
30 mph (48.28 km/h)42.41 mph (68.25 km/h)
35 mph (56.33 km/h)49.48 mph (79.63 km/h)
40 mph (64.37 km/h)56.54 mph (91 km/h)
45 mph (72.42 km/h)63.61 mph (102.38 km/h)
50 mph (80.47 km/h)70.68 mph (113.75 km/h)
55 mph (88.51 km/h)77.75 mph (125.13 km/h)
60 mph (96.56 km/h)84.82 mph (136.5 km/h)
65 mph (104.61 km/h)91.89 mph (147.88 km/h)
70 mph (112.65 km/h)98.95 mph (159.25 km/h)
75 mph (120.7 km/h)106.02 mph (170.63 km/h)
80 mph (128.75 km/h)113.09 mph (182 km/h)
85 mph (136.79 km/h)120.16 mph (193.38 km/h)
90 mph (144.84 km/h)127.23 mph (204.75 km/h)
95 mph (152.89 km/h)134.29 mph (216.13 km/h)
100 mph (160.93 km/h)141.36 mph (227.5 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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