Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/70r18 vs 265/65r18 Tire Comparison Side By Side
  275/70-18 265/65-18 Difference
Diameter inches (mm) 33.16 (842.2) 31.56 (801.7) -1.59 (-40.5) -4.8%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 104.17 (2645.85) 99.16 (2518.61) -5.01 (-127.23) -4.8%
Sidewall Height inches (mm) 7.58 (192.5) 6.78 (172.25) -0.8 (-20.25) -10.5%
Revolutions per mile (km) 608.25 (377.95) 638.98 (397.04) 30.73 (19.09) 5.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.04 mph (30.64 km/h)
25 mph (40.23 km/h)23.8 mph (38.3 km/h)
30 mph (48.28 km/h)28.56 mph (45.96 km/h)
35 mph (56.33 km/h)33.32 mph (53.62 km/h)
40 mph (64.37 km/h)38.08 mph (61.28 km/h)
45 mph (72.42 km/h)42.84 mph (68.94 km/h)
50 mph (80.47 km/h)47.6 mph (76.6 km/h)
55 mph (88.51 km/h)52.36 mph (84.26 km/h)
60 mph (96.56 km/h)57.11 mph (91.92 km/h)
65 mph (104.61 km/h)61.87 mph (99.58 km/h)
70 mph (112.65 km/h)66.63 mph (107.24 km/h)
75 mph (120.7 km/h)71.39 mph (114.9 km/h)
80 mph (128.75 km/h)76.15 mph (122.56 km/h)
85 mph (136.79 km/h)80.91 mph (130.22 km/h)
90 mph (144.84 km/h)85.67 mph (137.88 km/h)
95 mph (152.89 km/h)90.43 mph (145.54 km/h)
100 mph (160.93 km/h)95.19 mph (153.2 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
16261889203421242221229023662456258127062844295531553377355036603723395142694961
Better Fuel Economy Factory Ratios Increased Power

Most Popular 275/70-R18 Comparisons

To Top