Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/82r15 vs 165/85r15 Tire Comparison Side By Side
  165/82-15 165/85-15 Difference
Diameter inches (mm) 25.65 (651.6) 26.04 (661.5) 0.39 (9.9) 1.5%
Width inches (mm) 6.5 (165) 6.5 (165) 0 (0) 0%
Circum. inches (mm) 80.59 (2047.06) 81.82 (2078.16) 1.22 (31.1) 1.5%
Sidewall Height inches (mm) 5.33 (135.3) 5.52 (140.25) 0.19 (4.95) 3.7%
Revolutions per mile (km) 786.17 (488.5) 774.41 (481.19) -11.77 (-7.31) -1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.3 mph (32.68 km/h)
25 mph (40.23 km/h)25.38 mph (40.84 km/h)
30 mph (48.28 km/h)30.46 mph (49.01 km/h)
35 mph (56.33 km/h)35.53 mph (57.18 km/h)
40 mph (64.37 km/h)40.61 mph (65.35 km/h)
45 mph (72.42 km/h)45.68 mph (73.52 km/h)
50 mph (80.47 km/h)50.76 mph (81.69 km/h)
55 mph (88.51 km/h)55.84 mph (89.86 km/h)
60 mph (96.56 km/h)60.91 mph (98.03 km/h)
65 mph (104.61 km/h)65.99 mph (106.2 km/h)
70 mph (112.65 km/h)71.06 mph (114.37 km/h)
75 mph (120.7 km/h)76.14 mph (122.53 km/h)
80 mph (128.75 km/h)81.22 mph (130.7 km/h)
85 mph (136.79 km/h)86.29 mph (138.87 km/h)
90 mph (144.84 km/h)91.37 mph (147.04 km/h)
95 mph (152.89 km/h)96.44 mph (155.21 km/h)
100 mph (160.93 km/h)101.52 mph (163.38 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
19712289246525752692277628682977312832793447358138244092430244364512478851746013
Better Fuel Economy Factory Ratios Increased Power

Most Popular 165/82-R15 Comparisons

To Top