Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
305/35r19 vs 275/40r19 Tire Comparison Side By Side
  305/35-19 275/40-19 Difference
Diameter inches (mm) 27.41 (696.1) 27.66 (702.6) 0.26 (6.5) 0.9%
Width inches (mm) 12.01 (305) 10.83 (275) -1.18 (-30) -9.8%
Circum. inches (mm) 86.1 (2186.86) 86.9 (2207.28) 0.8 (20.42) 0.9%
Sidewall Height inches (mm) 4.2 (106.75) 4.33 (110) 0.13 (3.25) 3%
Revolutions per mile (km) 735.91 (457.28) 729.11 (453.04) -6.81 (-4.23) -0.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.19 mph (32.49 km/h)
25 mph (40.23 km/h)25.23 mph (40.61 km/h)
30 mph (48.28 km/h)30.28 mph (48.73 km/h)
35 mph (56.33 km/h)35.33 mph (56.85 km/h)
40 mph (64.37 km/h)40.37 mph (64.97 km/h)
45 mph (72.42 km/h)45.42 mph (73.1 km/h)
50 mph (80.47 km/h)50.47 mph (81.22 km/h)
55 mph (88.51 km/h)55.51 mph (89.34 km/h)
60 mph (96.56 km/h)60.56 mph (97.46 km/h)
65 mph (104.61 km/h)65.61 mph (105.58 km/h)
70 mph (112.65 km/h)70.65 mph (113.71 km/h)
75 mph (120.7 km/h)75.7 mph (121.83 km/h)
80 mph (128.75 km/h)80.75 mph (129.95 km/h)
85 mph (136.79 km/h)85.79 mph (138.07 km/h)
90 mph (144.84 km/h)90.84 mph (146.19 km/h)
95 mph (152.89 km/h)95.89 mph (154.32 km/h)
100 mph (160.93 km/h)100.93 mph (162.44 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
18552155232124242534261327002803294530873245337136003853405041774248450848725661
Better Fuel Economy Factory Ratios Increased Power

Most Popular 305/35-R19 Comparisons

To Top