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 295/75r16 Tire Comparison Side By Side
  36/12.5-16.5 295/75-16 Difference
Diameter inches (mm) 36.03 (915.18) 33.42 (848.9) -2.61 (-66.28) -7.2%
Width inches (mm) 12.52 (318) 11.61 (295) -0.91 (-23) -7.2%
Circum. inches (mm) 113.19 (2875.12) 105 (2666.9) -8.2 (-208.22) -7.2%
Sidewall Height inches (mm) 9.77 (248.04) 8.71 (221.25) -1.05 (-26.79) -10.8%
Revolutions per mile (km) 559.75 (347.81) 603.45 (374.97) 43.7 (27.16) 7.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.55 mph (29.86 km/h)
25 mph (40.23 km/h)23.19 mph (37.32 km/h)
30 mph (48.28 km/h)27.83 mph (44.78 km/h)
35 mph (56.33 km/h)32.47 mph (52.25 km/h)
40 mph (64.37 km/h)37.1 mph (59.71 km/h)
45 mph (72.42 km/h)41.74 mph (67.18 km/h)
50 mph (80.47 km/h)46.38 mph (74.64 km/h)
55 mph (88.51 km/h)51.02 mph (82.1 km/h)
60 mph (96.56 km/h)55.65 mph (89.57 km/h)
65 mph (104.61 km/h)60.29 mph (97.03 km/h)
70 mph (112.65 km/h)64.93 mph (104.5 km/h)
75 mph (120.7 km/h)69.57 mph (111.96 km/h)
80 mph (128.75 km/h)74.21 mph (119.42 km/h)
85 mph (136.79 km/h)78.84 mph (126.89 km/h)
90 mph (144.84 km/h)83.48 mph (134.35 km/h)
95 mph (152.89 km/h)88.12 mph (141.82 km/h)
100 mph (160.93 km/h)92.76 mph (149.28 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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