Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
31/10.5r15 vs 265/75r16 Tire Comparison Side By Side
  31/10.5-15 265/75-16 Difference
Diameter inches (mm) 30.98 (786.84) 31.65 (803.9) 0.67 (17.06) 2.2%
Width inches (mm) 10.51 (267) 10.43 (265) -0.08 (-2) -0.7%
Circum. inches (mm) 97.32 (2471.93) 99.43 (2525.53) 2.11 (53.6) 2.2%
Sidewall Height inches (mm) 7.99 (202.92) 7.82 (198.75) -0.16 (-4.17) -2.1%
Revolutions per mile (km) 651.05 (404.54) 637.23 (395.96) -13.82 (-8.58) -2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.43 mph (32.88 km/h)
25 mph (40.23 km/h)25.54 mph (41.11 km/h)
30 mph (48.28 km/h)30.65 mph (49.33 km/h)
35 mph (56.33 km/h)35.76 mph (57.55 km/h)
40 mph (64.37 km/h)40.87 mph (65.77 km/h)
45 mph (72.42 km/h)45.98 mph (73.99 km/h)
50 mph (80.47 km/h)51.08 mph (82.21 km/h)
55 mph (88.51 km/h)56.19 mph (90.43 km/h)
60 mph (96.56 km/h)61.3 mph (98.65 km/h)
65 mph (104.61 km/h)66.41 mph (106.88 km/h)
70 mph (112.65 km/h)71.52 mph (115.1 km/h)
75 mph (120.7 km/h)76.63 mph (123.32 km/h)
80 mph (128.75 km/h)81.73 mph (131.54 km/h)
85 mph (136.79 km/h)86.84 mph (139.76 km/h)
90 mph (144.84 km/h)91.95 mph (147.98 km/h)
95 mph (152.89 km/h)97.06 mph (156.2 km/h)
100 mph (160.93 km/h)102.17 mph (164.42 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
16221884202921182215228423602450257426982836294731473367354036503713394042584948
Better Fuel Economy Factory Ratios Increased Power

Most Popular 31/10.5-R15 Comparisons

To Top