Spicer Dana Drive Axles with Wide Base Single Tires - Guidelines - Manual (Page 2)

Wide Track Housings
Maximum Track (in.)
Allowable GAWR (lb.)
12.5 mm Wall Thickness DS404,
DST40, DSP40, DSH44
Allowable GAWR (lb.)
16 mm Wall Thickness
D40-170W
Up to 78.7 39,000 40,000
78.8 - 79.5 38,000 40,000
79.6 – 80.2 37,000 40,000
80.3 – 81.1 36,000 40,000
81.2 – 81.9 35,000 40,000
SelectTrack Housings
Maximum Track (in.)
Allowable GAWR (lb.)
9.5 mm Wall Thickness D40-145S
(Pro40)
Allowable GAWR (lb.)
11 mm Wall Thickness
D40-145HS (Pro40)
Up to 76.3 40,000 * 40,000 *
76.4 – 78.1 N/A 36,000 *
78.2 – 80.1 N/A 34,000 *
* Minimum Spring Seat Center Spacing = 1016 mm (40”)
6X2 Tandem Axles
**
Maximum Track (in.)
Allowable Tandem GAWR (lb.)
11 mm Wall Thickness S21-060B
Allowable Tandem GAWR (lb.)
12.5 mm Wall Thickness
D23-070B
Up to 73.3 40,000 ** 43,000 **
73.4 – 75.1 40,000 ** 40,000 **
75.2 – 76.0 39,000 ** 39,000 **
** Ratings assume Dana S170/S190 axle model at forward drive position and tag axle at rear-rear position.
Important: The above guidelines refer to Dana drive axle housing specifications only. It is the responsibility
of the customer and/or the OEM to qualify ratings of the tires and wheels; and also the hub and the bearing
system unless specifying Dana LMS or LMSI hubs.
Important: Aluminum hubs are rated to a maximum of 9,500 lbs per wheel end or 38,000 lbs per tandem axle
when used with 2” outset wheels.
For questions related to these guidelines for the replacement of dual tires with wide base single tires on vehicles
already in service, please contact Dana Technical Service.
Please contact Dana Applications Engineering for questions regarding new truck orders or an application approval.
Use of wide based single tires and outset wheels beyond 2” and/or a track width beyond application guidelines will
increase the stress level of the axle housing. Changing the approved load condition or improper wheel-end
maintenance practice may result in premature wheel-end issues. It is important to follow all guidelines when
converting from a dual wheel to a single wheel configuration and to maintain annual wheel-end inspection intervals.
!