Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/90r17 vs 265/80r17 Tire Comparison Side By Side
  165/90-17 265/80-17 Difference
Diameter inches (mm) 28.69 (728.8) 33.69 (855.8) 5 (127) 17.4%
Width inches (mm) 6.5 (165) 10.43 (265) 3.94 (100) 60.6%
Circum. inches (mm) 90.14 (2289.59) 105.85 (2688.57) 15.71 (398.98) 17.4%
Sidewall Height inches (mm) 5.85 (148.5) 8.35 (212) 2.5 (63.5) 42.8%
Revolutions per mile (km) 702.9 (436.76) 598.59 (371.94) -104.31 (-64.81) -14.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.49 mph (37.8 km/h)
25 mph (40.23 km/h)29.36 mph (47.24 km/h)
30 mph (48.28 km/h)35.23 mph (56.69 km/h)
35 mph (56.33 km/h)41.1 mph (66.14 km/h)
40 mph (64.37 km/h)46.97 mph (75.59 km/h)
45 mph (72.42 km/h)52.84 mph (85.04 km/h)
50 mph (80.47 km/h)58.71 mph (94.49 km/h)
55 mph (88.51 km/h)64.58 mph (103.94 km/h)
60 mph (96.56 km/h)70.46 mph (113.39 km/h)
65 mph (104.61 km/h)76.33 mph (122.84 km/h)
70 mph (112.65 km/h)82.2 mph (132.29 km/h)
75 mph (120.7 km/h)88.07 mph (141.73 km/h)
80 mph (128.75 km/h)93.94 mph (151.18 km/h)
85 mph (136.79 km/h)99.81 mph (160.63 km/h)
90 mph (144.84 km/h)105.68 mph (170.08 km/h)
95 mph (152.89 km/h)111.55 mph (179.53 km/h)
100 mph (160.93 km/h)117.43 mph (188.98 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
15231770190619902081214622172301241825342664276829563163332534293487370139994648
Better Fuel Economy Factory Ratios Increased Power

Most Popular 165/90-R17 Comparisons

To Top