Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
325/70r16 vs 295/75r16 Tire Comparison Side By Side
  325/70-16 295/75-16 Difference
Diameter inches (mm) 33.91 (861.4) 33.42 (848.9) -0.49 (-12.5) -1.5%
Width inches (mm) 12.8 (325) 11.61 (295) -1.18 (-30) -9.2%
Circum. inches (mm) 106.54 (2706.17) 105 (2666.9) -1.55 (-39.27) -1.5%
Sidewall Height inches (mm) 8.96 (227.5) 8.71 (221.25) -0.25 (-6.25) -2.7%
Revolutions per mile (km) 594.69 (369.53) 603.45 (374.97) 8.76 (5.44) 1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.71 mph (31.72 km/h)
25 mph (40.23 km/h)24.64 mph (39.65 km/h)
30 mph (48.28 km/h)29.56 mph (47.58 km/h)
35 mph (56.33 km/h)34.49 mph (55.51 km/h)
40 mph (64.37 km/h)39.42 mph (63.44 km/h)
45 mph (72.42 km/h)44.35 mph (71.37 km/h)
50 mph (80.47 km/h)49.27 mph (79.3 km/h)
55 mph (88.51 km/h)54.2 mph (87.23 km/h)
60 mph (96.56 km/h)59.13 mph (95.16 km/h)
65 mph (104.61 km/h)64.06 mph (103.09 km/h)
70 mph (112.65 km/h)68.98 mph (111.02 km/h)
75 mph (120.7 km/h)73.91 mph (118.95 km/h)
80 mph (128.75 km/h)78.84 mph (126.88 km/h)
85 mph (136.79 km/h)83.77 mph (134.81 km/h)
90 mph (144.84 km/h)88.69 mph (142.74 km/h)
95 mph (152.89 km/h)93.62 mph (150.67 km/h)
100 mph (160.93 km/h)98.55 mph (158.6 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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