Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/40r19 vs 285/35r19 Tire Comparison Side By Side
  285/40-19 285/35-19 Difference
Diameter inches (mm) 27.98 (710.6) 26.85 (682.1) -1.12 (-28.5) -4%
Width inches (mm) 11.22 (285) 11.22 (285) 0 (0) 0%
Circum. inches (mm) 87.89 (2232.42) 84.37 (2142.88) -3.53 (-89.54) -4%
Sidewall Height inches (mm) 4.49 (114) 3.93 (99.75) -0.56 (-14.25) -12.5%
Revolutions per mile (km) 720.9 (447.94) 751.02 (466.66) 30.12 (18.72) 4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.2 mph (30.9 km/h)
25 mph (40.23 km/h)24 mph (38.62 km/h)
30 mph (48.28 km/h)28.8 mph (46.34 km/h)
35 mph (56.33 km/h)33.6 mph (54.07 km/h)
40 mph (64.37 km/h)38.4 mph (61.79 km/h)
45 mph (72.42 km/h)43.2 mph (69.52 km/h)
50 mph (80.47 km/h)47.99 mph (77.24 km/h)
55 mph (88.51 km/h)52.79 mph (84.96 km/h)
60 mph (96.56 km/h)57.59 mph (92.69 km/h)
65 mph (104.61 km/h)62.39 mph (100.41 km/h)
70 mph (112.65 km/h)67.19 mph (108.14 km/h)
75 mph (120.7 km/h)71.99 mph (115.86 km/h)
80 mph (128.75 km/h)76.79 mph (123.58 km/h)
85 mph (136.79 km/h)81.59 mph (131.31 km/h)
90 mph (144.84 km/h)86.39 mph (139.03 km/h)
95 mph (152.89 km/h)91.19 mph (146.76 km/h)
100 mph (160.93 km/h)95.99 mph (154.48 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
19112220239124972611269227812887303431803343347337093969417243024375464450185831
Better Fuel Economy Factory Ratios Increased Power

Most Popular 285/40-R19 Comparisons

To Top