Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
26/11r12 vs 220/80r12 Tire Comparison Side By Side
  26/11-12 220/80-12 Difference
Diameter inches (mm) 26.06 (661.92) 25.86 (656.8) -0.2 (-5.12) -0.8%
Width inches (mm) 10.98 (279) 8.66 (220) -2.32 (-59) -21.1%
Circum. inches (mm) 81.87 (2079.48) 81.24 (2063.4) -0.63 (-16.08) -0.8%
Sidewall Height inches (mm) 7.03 (178.56) 6.93 (176) -0.1 (-2.56) -1.4%
Revolutions per mile (km) 773.92 (480.89) 779.95 (484.64) 6.03 (3.75) 0.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.85 mph (31.94 km/h)
25 mph (40.23 km/h)24.81 mph (39.92 km/h)
30 mph (48.28 km/h)29.77 mph (47.91 km/h)
35 mph (56.33 km/h)34.73 mph (55.89 km/h)
40 mph (64.37 km/h)39.69 mph (63.88 km/h)
45 mph (72.42 km/h)44.65 mph (71.86 km/h)
50 mph (80.47 km/h)49.61 mph (79.84 km/h)
55 mph (88.51 km/h)54.57 mph (87.83 km/h)
60 mph (96.56 km/h)59.54 mph (95.81 km/h)
65 mph (104.61 km/h)64.5 mph (103.8 km/h)
70 mph (112.65 km/h)69.46 mph (111.78 km/h)
75 mph (120.7 km/h)74.42 mph (119.77 km/h)
80 mph (128.75 km/h)79.38 mph (127.75 km/h)
85 mph (136.79 km/h)84.34 mph (135.74 km/h)
90 mph (144.84 km/h)89.3 mph (143.72 km/h)
95 mph (152.89 km/h)94.27 mph (151.71 km/h)
100 mph (160.93 km/h)99.23 mph (159.69 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
19852306248325932711279628892998315033023471360638514122433344684544482352116056
Better Fuel Economy Factory Ratios Increased Power

Most Popular 26/11-R12 Comparisons

To Top