Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/60r17 vs 315/60r17 Tire Comparison Side By Side
  285/60-17 315/60-17 Difference
Diameter inches (mm) 30.46 (773.8) 31.88 (809.8) 1.42 (36) 4.7%
Width inches (mm) 11.22 (285) 12.4 (315) 1.18 (30) 10.5%
Circum. inches (mm) 95.71 (2430.96) 100.16 (2544.06) 4.45 (113.1) 4.7%
Sidewall Height inches (mm) 6.73 (171) 7.44 (189) 0.71 (18) 10.5%
Revolutions per mile (km) 662.02 (411.36) 632.59 (393.07) -29.43 (-18.29) -4.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.93 mph (33.68 km/h)
25 mph (40.23 km/h)26.16 mph (42.11 km/h)
30 mph (48.28 km/h)31.4 mph (50.53 km/h)
35 mph (56.33 km/h)36.63 mph (58.95 km/h)
40 mph (64.37 km/h)41.86 mph (67.37 km/h)
45 mph (72.42 km/h)47.09 mph (75.79 km/h)
50 mph (80.47 km/h)52.33 mph (84.21 km/h)
55 mph (88.51 km/h)57.56 mph (92.63 km/h)
60 mph (96.56 km/h)62.79 mph (101.05 km/h)
65 mph (104.61 km/h)68.02 mph (109.47 km/h)
70 mph (112.65 km/h)73.26 mph (117.9 km/h)
75 mph (120.7 km/h)78.49 mph (126.32 km/h)
80 mph (128.75 km/h)83.72 mph (134.74 km/h)
85 mph (136.79 km/h)88.95 mph (143.16 km/h)
90 mph (144.84 km/h)94.19 mph (151.58 km/h)
95 mph (152.89 km/h)99.42 mph (160 km/h)
100 mph (160.93 km/h)104.65 mph (168.42 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
16101870201421032199226723432432255526782815292531243343351436243685391242274912
Better Fuel Economy Factory Ratios Increased Power

Most Popular 285/60-R17 Comparisons

To Top