Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/70r16 vs 256/75r16 Tire Comparison Side By Side
  265/70-16 256/75-16 Difference
Diameter inches (mm) 30.61 (777.4) 31.12 (790.4) 0.51 (13) 1.7%
Width inches (mm) 10.43 (265) 10.08 (256) -0.35 (-9) -3.4%
Circum. inches (mm) 96.15 (2442.27) 97.76 (2483.11) 1.61 (40.84) 1.7%
Sidewall Height inches (mm) 7.3 (185.5) 7.56 (192) 0.26 (6.5) 3.5%
Revolutions per mile (km) 658.95 (409.45) 648.12 (402.72) -10.84 (-6.73) -1.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.33 mph (32.73 km/h)
25 mph (40.23 km/h)25.42 mph (40.91 km/h)
30 mph (48.28 km/h)30.5 mph (49.09 km/h)
35 mph (56.33 km/h)35.59 mph (57.27 km/h)
40 mph (64.37 km/h)40.67 mph (65.45 km/h)
45 mph (72.42 km/h)45.75 mph (73.63 km/h)
50 mph (80.47 km/h)50.84 mph (81.81 km/h)
55 mph (88.51 km/h)55.92 mph (89.99 km/h)
60 mph (96.56 km/h)61 mph (98.18 km/h)
65 mph (104.61 km/h)66.09 mph (106.36 km/h)
70 mph (112.65 km/h)71.17 mph (114.54 km/h)
75 mph (120.7 km/h)76.25 mph (122.72 km/h)
80 mph (128.75 km/h)81.34 mph (130.9 km/h)
85 mph (136.79 km/h)86.42 mph (139.08 km/h)
90 mph (144.84 km/h)91.51 mph (147.26 km/h)
95 mph (152.89 km/h)96.59 mph (155.44 km/h)
100 mph (160.93 km/h)101.67 mph (163.63 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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