Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
315/45r16 vs 165/70r16 Tire Comparison Side By Side
  315/45-16 165/70-16 Difference
Diameter inches (mm) 27.16 (689.9) 25.09 (637.4) -2.07 (-52.5) -7.6%
Width inches (mm) 12.4 (315) 6.5 (165) -5.91 (-150) -47.6%
Circum. inches (mm) 85.33 (2167.38) 78.84 (2002.45) -6.49 (-164.93) -7.6%
Sidewall Height inches (mm) 5.58 (141.75) 4.55 (115.5) -1.03 (-26.25) -18.5%
Revolutions per mile (km) 742.53 (461.38) 803.69 (499.39) 61.16 (38) 8.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.48 mph (29.74 km/h)
25 mph (40.23 km/h)23.1 mph (37.17 km/h)
30 mph (48.28 km/h)27.72 mph (44.61 km/h)
35 mph (56.33 km/h)32.34 mph (52.04 km/h)
40 mph (64.37 km/h)36.96 mph (59.48 km/h)
45 mph (72.42 km/h)41.58 mph (66.91 km/h)
50 mph (80.47 km/h)46.2 mph (74.34 km/h)
55 mph (88.51 km/h)50.81 mph (81.78 km/h)
60 mph (96.56 km/h)55.43 mph (89.21 km/h)
65 mph (104.61 km/h)60.05 mph (96.65 km/h)
70 mph (112.65 km/h)64.67 mph (104.08 km/h)
75 mph (120.7 km/h)69.29 mph (111.52 km/h)
80 mph (128.75 km/h)73.91 mph (118.95 km/h)
85 mph (136.79 km/h)78.53 mph (126.38 km/h)
90 mph (144.84 km/h)83.15 mph (133.82 km/h)
95 mph (152.89 km/h)87.77 mph (141.25 km/h)
100 mph (160.93 km/h)92.39 mph (148.69 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
20452376255926722794288129763090324634033577371639694247446546044682496953706240
Better Fuel Economy Factory Ratios Increased Power

Most Popular 315/45-R16 Comparisons

To Top