Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
26/11r12 vs 24/8r11 Tire Comparison Side By Side
  26/11-12 24/8-11 Difference
Diameter inches (mm) 26.06 (661.92) 23.95 (608.26) -2.11 (-53.66) -8.1%
Width inches (mm) 10.98 (279) 7.99 (203) -2.99 (-76) -27.2%
Circum. inches (mm) 81.87 (2079.48) 75.23 (1910.91) -6.64 (-168.58) -8.1%
Sidewall Height inches (mm) 7.03 (178.56) 6.47 (164.43) -0.56 (-14.13) -7.9%
Revolutions per mile (km) 773.92 (480.89) 842.19 (523.31) 68.27 (42.42) 8.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.38 mph (29.58 km/h)
25 mph (40.23 km/h)22.97 mph (36.97 km/h)
30 mph (48.28 km/h)27.57 mph (44.37 km/h)
35 mph (56.33 km/h)32.16 mph (51.76 km/h)
40 mph (64.37 km/h)36.76 mph (59.16 km/h)
45 mph (72.42 km/h)41.35 mph (66.55 km/h)
50 mph (80.47 km/h)45.95 mph (73.94 km/h)
55 mph (88.51 km/h)50.54 mph (81.34 km/h)
60 mph (96.56 km/h)55.14 mph (88.73 km/h)
65 mph (104.61 km/h)59.73 mph (96.13 km/h)
70 mph (112.65 km/h)64.33 mph (103.52 km/h)
75 mph (120.7 km/h)68.92 mph (110.92 km/h)
80 mph (128.75 km/h)73.51 mph (118.31 km/h)
85 mph (136.79 km/h)78.11 mph (125.7 km/h)
90 mph (144.84 km/h)82.7 mph (133.1 km/h)
95 mph (152.89 km/h)87.3 mph (140.49 km/h)
100 mph (160.93 km/h)91.89 mph (147.89 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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