Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/85r16 vs 295/75r16 Tire Comparison Side By Side
  255/85-16 295/75-16 Difference
Diameter inches (mm) 33.07 (839.9) 33.42 (848.9) 0.35 (9) 1.1%
Width inches (mm) 10.04 (255) 11.61 (295) 1.57 (40) 15.7%
Circum. inches (mm) 103.88 (2638.62) 105 (2666.9) 1.11 (28.27) 1.1%
Sidewall Height inches (mm) 8.53 (216.75) 8.71 (221.25) 0.18 (4.5) 2.1%
Revolutions per mile (km) 609.92 (378.98) 603.45 (374.97) -6.47 (-4.02) -1.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.21 mph (32.53 km/h)
25 mph (40.23 km/h)25.27 mph (40.66 km/h)
30 mph (48.28 km/h)30.32 mph (48.8 km/h)
35 mph (56.33 km/h)35.38 mph (56.93 km/h)
40 mph (64.37 km/h)40.43 mph (65.06 km/h)
45 mph (72.42 km/h)45.48 mph (73.2 km/h)
50 mph (80.47 km/h)50.54 mph (81.33 km/h)
55 mph (88.51 km/h)55.59 mph (89.46 km/h)
60 mph (96.56 km/h)60.64 mph (97.6 km/h)
65 mph (104.61 km/h)65.7 mph (105.73 km/h)
70 mph (112.65 km/h)70.75 mph (113.86 km/h)
75 mph (120.7 km/h)75.8 mph (121.99 km/h)
80 mph (128.75 km/h)80.86 mph (130.13 km/h)
85 mph (136.79 km/h)85.91 mph (138.26 km/h)
90 mph (144.84 km/h)90.96 mph (146.39 km/h)
95 mph (152.89 km/h)96.02 mph (154.53 km/h)
100 mph (160.93 km/h)101.07 mph (162.66 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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