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 265/70r16 Tire Comparison Side By Side
  235/80-16 265/70-16 Difference
Diameter inches (mm) 30.8 (782.4) 30.61 (777.4) -0.2 (-5) -0.6%
Width inches (mm) 9.25 (235) 10.43 (265) 1.18 (30) 12.8%
Circum. inches (mm) 96.77 (2457.98) 96.15 (2442.27) -0.62 (-15.71) -0.6%
Sidewall Height inches (mm) 7.4 (188) 7.3 (185.5) -0.1 (-2.5) -1.3%
Revolutions per mile (km) 654.74 (406.84) 658.95 (409.45) 4.21 (2.62) 0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.87 mph (31.98 km/h)
25 mph (40.23 km/h)24.84 mph (39.98 km/h)
30 mph (48.28 km/h)29.81 mph (47.97 km/h)
35 mph (56.33 km/h)34.78 mph (55.97 km/h)
40 mph (64.37 km/h)39.74 mph (63.96 km/h)
45 mph (72.42 km/h)44.71 mph (71.96 km/h)
50 mph (80.47 km/h)49.68 mph (79.95 km/h)
55 mph (88.51 km/h)54.65 mph (87.95 km/h)
60 mph (96.56 km/h)59.62 mph (95.94 km/h)
65 mph (104.61 km/h)64.58 mph (103.94 km/h)
70 mph (112.65 km/h)69.55 mph (111.93 km/h)
75 mph (120.7 km/h)74.52 mph (119.93 km/h)
80 mph (128.75 km/h)79.49 mph (127.92 km/h)
85 mph (136.79 km/h)84.46 mph (135.92 km/h)
90 mph (144.84 km/h)89.42 mph (143.92 km/h)
95 mph (152.89 km/h)94.39 mph (151.91 km/h)
100 mph (160.93 km/h)99.36 mph (159.91 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
16771948209821912291236224402533266227902933304732543482366137753839407544035116
Better Fuel Economy Factory Ratios Increased Power

Most Popular 235/80-R16 Comparisons

To Top