22.5" x 8.25" - Hub Pilot - 285.75mm Bolt Circle

The latest in advanced innovation, manufacturing and engineering on the road. Featuring Alcoa’s proprietary MagnaForce® alloy, vHub Bore Technology and a proprietary flange mounting design to accommodate for the aerodynamic drive cover, it is a lightweight champion. Ideal for heavy-duty truck, trailer, and motorhome applications.

Where To Buy
Specifications Measurement
Product Part Number ULA18x
Wheel Size (in) 22.5" x 8.25"
Mounting System Hub Pilot
Bolt Holes 10
Bolt Circle 285.75mm
Bolt Hole Diameter 26mm
Hub Bore 220.1mm
Approx. Weight (lbs) 39 lbs
Outset (in) 6.6"
Inset (in) 5.81"
Max Load (lbs) 7400 lbs
Max Cold Infl. (psi) 130 psi
Valve Stem TR554D
Part Number Finish
ULA183 Mirror Polish Both Sides
ULA183DB Mirror Polish Both Sides with Dura-Bright
ULA180DB Brushed with Dura-Bright
ULA181 Mirror Polish Outside Only
ULA181DB Mirror Polish Outside Only with Dura-Bright
ULA182 Mirror Polish Inside Only
ULA182DB Mirror Polish Inside Only with Dura-Bright
ULA187 High Polish
ULA18BLK Dura-Black
Accessories and Mounting Hardware Part Number
Front Hub Cover
(Includes Nut Covers Where Applicable)
079100DT, 079300DT, 079500DT, 079200DT, 079400DT, 079600DT
Rear Hub Cover
(Includes Nut Covers Where Applicable)
081500 (BLACK), 081600 (POLISHED)
Nut Cover Only
(Not Intended to Secure Hub Covers)
Alcoa® Mounting Hardware Kits -

0 0 and 7 finish options are determined by inset or outset mounting positions and may not be finished on both sides. See chart for position and available finish options.
1Hub cover system kits with part numbers 076185 (front), 077185 (rear), 082122 (front), and 082133 (rear) contain screw-on Hug-A-Lug® nut covers and require a minimum of four (4) threads of the stud to extend above the tightened cap nut for use. Six (6) threads are recommended.
2082012 (30mm kit Front and Rear).
3OEM exclusive. Purchase through Peterbilt dealer only.
4OEM exclusive. Purchase through Kenworth dealer only.
5OEM exclusive. Purchase through Volvo dealer only.
See our Warranty page for more information

See Wheel Accessory Products Catalog for part number specific fitment information. Always perform a fitment check to ensure accessories are secure before operating vehicle.