4
26
Single wheel,
stud located, ball
seat mounting
4-5
NOTICE: Do not exceed
maximum wheel load.
Customer must compare
OEM vehicle load rating
to maximum wheel
load rating.
Refer to tire manufacturer’s
recommendation for proper
tire pressure. Before
mounting the tire perform
a wheel fitment check
to insure proper clearance
from any obstructions.
Front wheels are mounted as singles and require 1.6" (1-39/64") minimum stud standout.
Most vehicles have 1-1/8-inch studs on the front hubs. Alcoa single cap nuts, Part Nos.
5996R and 5996L, or equivalents, should be used. Some front hubs have 3/4-inch studs.
On these hubs, use Alcoa single cap nuts, Part Nos. 5995R and 5995L or equivalents.
DiscMate wheel spacers are recommended for use with Alcoa Dura-Bright
®
surface
treated wheels to protect the wheel contact surfaces from marring. DiscMate wheel
spacers are placed between the contact surfaces of the Dura-Bright
®
wheel and the
brake drum as shown below.
Correct single mounting
with 1-1/8-inch stud
located, ball seat mount.
Correct single mounting
with 3/4-inch stud located,
ball seat mount.
Dualed wheels,
stud located, ball
seat mounting
4-6
Rear wheels are most frequently mounted as duals. Each inner aluminum wheel is attached
by 10 inner cap nuts. Alcoa recommends use of inner cap nuts 5978R, 5978L, or 5988R,
5988L (see 4-2, page 24).
Cap nuts recommended by Alcoa are compatible with Alcoa wheels. Hardware of equal
dimensions and strength may be used.
Continued on next page.
1-1/8” Stud
3/4” Stud
Drum
Alcoa Aluminum Wheel
DiscMate (when used)
Alcoa Aluminum Wheel
DiscMate (when used)
Outer Cap Nut
P/N 5996R or L
(See 4-2, page 24)
Hub
1.6 inch
minimum
Drum
Outer Cap Nut
P/N 5995R or L
(See 4-2, page 24)
Hub
1.6 inch
minimum