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 295/75r17 Tire Comparison Side By Side
  36/12.5-16.5 295/75-17 Difference
Diameter inches (mm) 36.03 (915.18) 34.42 (874.3) -1.61 (-40.88) -4.5%
Width inches (mm) 12.52 (318) 11.61 (295) -0.91 (-23) -7.2%
Circum. inches (mm) 113.19 (2875.12) 108.14 (2746.69) -5.06 (-128.43) -4.5%
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) 585.92 (364.07) 26.17 (16.26) 4.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.11 mph (30.75 km/h)
25 mph (40.23 km/h)23.88 mph (38.44 km/h)
30 mph (48.28 km/h)28.66 mph (46.12 km/h)
35 mph (56.33 km/h)33.44 mph (53.81 km/h)
40 mph (64.37 km/h)38.21 mph (61.5 km/h)
45 mph (72.42 km/h)42.99 mph (69.19 km/h)
50 mph (80.47 km/h)47.77 mph (76.87 km/h)
55 mph (88.51 km/h)52.54 mph (84.56 km/h)
60 mph (96.56 km/h)57.32 mph (92.25 km/h)
65 mph (104.61 km/h)62.1 mph (99.93 km/h)
70 mph (112.65 km/h)66.87 mph (107.62 km/h)
75 mph (120.7 km/h)71.65 mph (115.31 km/h)
80 mph (128.75 km/h)76.43 mph (123 km/h)
85 mph (136.79 km/h)81.2 mph (130.68 km/h)
90 mph (144.84 km/h)85.98 mph (138.37 km/h)
95 mph (152.89 km/h)90.76 mph (146.06 km/h)
100 mph (160.93 km/h)95.53 mph (153.75 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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