Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/80r16 vs 265/75r16 Tire Comparison Side By Side
  235/80-16 265/75-16 Difference
Diameter inches (mm) 30.8 (782.4) 31.65 (803.9) 0.85 (21.5) 2.7%
Width inches (mm) 9.25 (235) 10.43 (265) 1.18 (30) 12.8%
Circum. inches (mm) 96.77 (2457.98) 99.43 (2525.53) 2.66 (67.54) 2.7%
Sidewall Height inches (mm) 7.4 (188) 7.82 (198.75) 0.42 (10.75) 5.7%
Revolutions per mile (km) 654.74 (406.84) 637.23 (395.96) -17.51 (-10.88) -2.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.55 mph (33.07 km/h)
25 mph (40.23 km/h)25.69 mph (41.34 km/h)
30 mph (48.28 km/h)30.82 mph (49.61 km/h)
35 mph (56.33 km/h)35.96 mph (57.87 km/h)
40 mph (64.37 km/h)41.1 mph (66.14 km/h)
45 mph (72.42 km/h)46.24 mph (74.41 km/h)
50 mph (80.47 km/h)51.37 mph (82.68 km/h)
55 mph (88.51 km/h)56.51 mph (90.95 km/h)
60 mph (96.56 km/h)61.65 mph (99.21 km/h)
65 mph (104.61 km/h)66.79 mph (107.48 km/h)
70 mph (112.65 km/h)71.92 mph (115.75 km/h)
75 mph (120.7 km/h)77.06 mph (124.02 km/h)
80 mph (128.75 km/h)82.2 mph (132.29 km/h)
85 mph (136.79 km/h)87.34 mph (140.55 km/h)
90 mph (144.84 km/h)92.47 mph (148.82 km/h)
95 mph (152.89 km/h)97.61 mph (157.09 km/h)
100 mph (160.93 km/h)102.75 mph (165.36 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 235/80-R16 Comparisons

To Top