285/75R24.5 tire size

Truck and trailer tire. 285/75R24.5 is 41.0 – 42.2 inches tall in manufacturer data books, measured on 9 tire models.

What 285/75R24.5 means

285 mm nominal section width, 75 aspect ratio (sidewall height = 75% of width), R radial, for a 24.5-inch rim.

Used on steer, drive and trailer positions — the tread pattern of the model decides the position, not the size.

Dimensions

Overall diameter: 41.0 in (1,041 mm) – 42.2 in (1,072 mm)
Section width: 10.7 in (272 mm) – 11.4 in (290 mm)
Static loaded radius: 19.3 in (490 mm) – 19.8 in (503 mm)
Revolutions per mile: 492 – 507 (306 – 315 per km)

Range across the tire models in the Bridgestone (2017) and Apollo (2023) truck data books; tread depth and model change the numbers.

Load ranges and maximum loads

Load range G: 6,175 lb (2,801 kg) @ 110 psi (7.6 bar)
dual: 5,675 lb (2,574 kg) @ 110 psi (7.6 bar)
Load range H: 6,780 lb (3,075 kg) @ 120 psi (8.3 bar)
dual: 6,175 lb (2,801 kg) @ 120 psi (8.3 bar)

Maximum load per tire at the cold pressure shown. Single = 2 tires per axle end-to-end, dual = per tire in a pair.

Load & inflation table

Single, load range H: load by cold pressure

70 psi (4.8 bar): 4,545 lb (2,062 kg)
75 psi (5.2 bar): 4,770 lb (2,164 kg)
80 psi (5.5 bar): 4,940 lb (2,241 kg)
85 psi (5.9 bar): 5,210 lb (2,363 kg)
90 psi (6.2 bar): 5,420 lb (2,458 kg)
95 psi (6.6 bar): 5,675 lb (2,574 kg)
100 psi (6.9 bar): 5,835 lb (2,647 kg)
105 psi (7.2 bar): 6,040 lb (2,740 kg)
110 psi (7.6 bar): 6,175 lb (2,801 kg)
115 psi (7.9 bar): 6,440 lb (2,921 kg)
120 psi (8.3 bar): 6,780 lb (3,075 kg)

Dual, load range H: load by cold pressure

70 psi (4.8 bar): 1,435 lb (651 kg)
75 psi (5.2 bar): 4,340 lb (1,969 kg)
80 psi (5.5 bar): 4,540 lb (2,059 kg)
85 psi (5.9 bar): 4,740 lb (2,150 kg)
90 psi (6.2 bar): 4,930 lb (2,236 kg)
95 psi (6.6 bar): 5,205 lb (2,361 kg)
100 psi (6.9 bar): 5,310 lb (2,409 kg)
105 psi (7.2 bar): 5,495 lb (2,492 kg)
110 psi (7.6 bar): 5,675 lb (2,574 kg)
115 psi (7.9 bar): 5,860 lb (2,658 kg)
120 psi (8.3 bar): 6,175 lb (2,801 kg)

Bridgestone Truck Tire Load & Inflation Tables 2018 (TRA-based). Pressure is the minimum for the load.

285/75R24.5 vs 11R24.5

The two are sold as alternatives on the same rim. Diameter: 41.0 – 42.2 in vs 42.8 – 44.6 in; revolutions per mile 501 vs 474 (middle values). Compare speed and RPM →