Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
325/35r28 vs 405/25r24 Tire Comparison Side By Side
  325/35-28 405/25-24 Difference
Diameter inches (mm) 36.96 (938.7) 31.97 (812.1) -4.98 (-126.6) -13.5%
Width inches (mm) 12.8 (325) 15.94 (405) 3.15 (80) 24.6%
Circum. inches (mm) 116.1 (2949.01) 100.44 (2551.29) -15.66 (-397.73) -13.5%
Sidewall Height inches (mm) 4.48 (113.75) 3.99 (101.25) -0.49 (-12.5) -11%
Revolutions per mile (km) 545.72 (339.1) 630.8 (391.96) 85.07 (52.86) 15.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.3 mph (27.85 km/h)
25 mph (40.23 km/h)21.63 mph (34.81 km/h)
30 mph (48.28 km/h)25.95 mph (41.77 km/h)
35 mph (56.33 km/h)30.28 mph (48.73 km/h)
40 mph (64.37 km/h)34.61 mph (55.69 km/h)
45 mph (72.42 km/h)38.93 mph (62.65 km/h)
50 mph (80.47 km/h)43.26 mph (69.61 km/h)
55 mph (88.51 km/h)47.58 mph (76.58 km/h)
60 mph (96.56 km/h)51.91 mph (83.54 km/h)
65 mph (104.61 km/h)56.23 mph (90.5 km/h)
70 mph (112.65 km/h)60.56 mph (97.46 km/h)
75 mph (120.7 km/h)64.88 mph (104.42 km/h)
80 mph (128.75 km/h)69.21 mph (111.38 km/h)
85 mph (136.79 km/h)73.54 mph (118.35 km/h)
90 mph (144.84 km/h)77.86 mph (125.31 km/h)
95 mph (152.89 km/h)82.19 mph (132.27 km/h)
100 mph (160.93 km/h)86.51 mph (139.23 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
16051865200820972193226123362425254826712807291731153333350436143675390042154898
Better Fuel Economy Factory Ratios Increased Power

Most Popular 325/35-R28 Comparisons

To Top