Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
36/12.5r16.5 vs 365/60r24 Tire Comparison Side By Side
  36/12.5-16.5 365/60-24 Difference
Diameter inches (mm) 36.03 (915.18) 41.24 (1047.6) 5.21 (132.42) 14.5%
Width inches (mm) 12.52 (318) 14.37 (365) 1.85 (47) 14.8%
Circum. inches (mm) 113.19 (2875.12) 129.57 (3291.13) 16.38 (416.01) 14.5%
Sidewall Height inches (mm) 9.77 (248.04) 8.62 (219) -1.14 (-29.04) -11.7%
Revolutions per mile (km) 559.75 (347.81) 488.99 (303.85) -70.75 (-43.96) -12.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.89 mph (36.84 km/h)
25 mph (40.23 km/h)28.62 mph (46.06 km/h)
30 mph (48.28 km/h)34.34 mph (55.27 km/h)
35 mph (56.33 km/h)40.06 mph (64.48 km/h)
40 mph (64.37 km/h)45.79 mph (73.69 km/h)
45 mph (72.42 km/h)51.51 mph (82.9 km/h)
50 mph (80.47 km/h)57.23 mph (92.11 km/h)
55 mph (88.51 km/h)62.96 mph (101.32 km/h)
60 mph (96.56 km/h)68.68 mph (110.53 km/h)
65 mph (104.61 km/h)74.41 mph (119.74 km/h)
70 mph (112.65 km/h)80.13 mph (128.95 km/h)
75 mph (120.7 km/h)85.85 mph (138.17 km/h)
80 mph (128.75 km/h)91.58 mph (147.38 km/h)
85 mph (136.79 km/h)97.3 mph (156.59 km/h)
90 mph (144.84 km/h)103.02 mph (165.8 km/h)
95 mph (152.89 km/h)108.75 mph (175.01 km/h)
100 mph (160.93 km/h)114.47 mph (184.22 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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