Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
26/10r12 vs 26/9r12 Tire Comparison Side By Side
  26/10-12 26/9-12 Difference
Diameter inches (mm) 26 (660.4) 26.06 (662.04) 0.06 (1.64) 0.2%
Width inches (mm) 10 (254) 9.02 (229) -0.98 (-25) -9.8%
Circum. inches (mm) 81.68 (2074.71) 81.88 (2079.86) 0.2 (5.15) 0.2%
Sidewall Height inches (mm) 7 (177.8) 7.03 (178.62) 0.03 (0.82) 0.5%
Revolutions per mile (km) 775.7 (481.99) 773.78 (480.8) -1.92 (-1.19) -0.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.05 mph (32.27 km/h)
25 mph (40.23 km/h)25.06 mph (40.33 km/h)
30 mph (48.28 km/h)30.07 mph (48.4 km/h)
35 mph (56.33 km/h)35.09 mph (56.47 km/h)
40 mph (64.37 km/h)40.1 mph (64.53 km/h)
45 mph (72.42 km/h)45.11 mph (72.6 km/h)
50 mph (80.47 km/h)50.12 mph (80.67 km/h)
55 mph (88.51 km/h)55.14 mph (88.73 km/h)
60 mph (96.56 km/h)60.15 mph (96.8 km/h)
65 mph (104.61 km/h)65.16 mph (104.87 km/h)
70 mph (112.65 km/h)70.17 mph (112.93 km/h)
75 mph (120.7 km/h)75.19 mph (121 km/h)
80 mph (128.75 km/h)80.2 mph (129.07 km/h)
85 mph (136.79 km/h)85.21 mph (137.13 km/h)
90 mph (144.84 km/h)90.22 mph (145.2 km/h)
95 mph (152.89 km/h)95.24 mph (153.27 km/h)
100 mph (160.93 km/h)100.25 mph (161.33 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
19692288246325722690277428662975312532763444357838214089429944334508478551706008
Better Fuel Economy Factory Ratios Increased Power

Most Popular 26/10-R12 Comparisons

To Top