Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
170/60r17 vs 160/60r17 Tire Comparison Side By Side
  170/60-17 160/60-17 Difference
Diameter inches (mm) 25.03 (635.8) 24.56 (623.8) -0.47 (-12) -1.9%
Width inches (mm) 6.69 (170) 6.3 (160) -0.39 (-10) -5.9%
Circum. inches (mm) 78.64 (1997.42) 77.15 (1959.73) -1.48 (-37.7) -1.9%
Sidewall Height inches (mm) 4.02 (102) 3.78 (96) -0.24 (-6) -5.9%
Revolutions per mile (km) 805.71 (500.64) 821.21 (510.27) 15.5 (9.63) 1.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.62 mph (31.58 km/h)
25 mph (40.23 km/h)24.53 mph (39.47 km/h)
30 mph (48.28 km/h)29.43 mph (47.37 km/h)
35 mph (56.33 km/h)34.34 mph (55.26 km/h)
40 mph (64.37 km/h)39.25 mph (63.16 km/h)
45 mph (72.42 km/h)44.15 mph (71.05 km/h)
50 mph (80.47 km/h)49.06 mph (78.95 km/h)
55 mph (88.51 km/h)53.96 mph (86.84 km/h)
60 mph (96.56 km/h)58.87 mph (94.74 km/h)
65 mph (104.61 km/h)63.77 mph (102.63 km/h)
70 mph (112.65 km/h)68.68 mph (110.53 km/h)
75 mph (120.7 km/h)73.58 mph (118.42 km/h)
80 mph (128.75 km/h)78.49 mph (126.32 km/h)
85 mph (136.79 km/h)83.4 mph (134.21 km/h)
90 mph (144.84 km/h)88.3 mph (142.11 km/h)
95 mph (152.89 km/h)93.21 mph (150 km/h)
100 mph (160.93 km/h)98.11 mph (157.9 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
20902428261427302855294430413157331734773655379740554340456247044784507854876376
Better Fuel Economy Factory Ratios Increased Power

Most Popular 170/60-R17 Comparisons

To Top