Highway member of the X-Series
Daimler’s introduction establishes a new on-highway family. The launch date does not by itself establish a continuous production-year range.
Daimler Truck 57X introduction · August 2022 ↗
THE TRACTOR REFERENCE DESK
Western Star
57X family
Western Star's on-highway platform, distinct from the vocational 49X.
01 / FIND YOUR REFERENCE
Choose a reference edition
Start with the model configuration, then choose a publication and explore its documented equipment.
Catalogue reference
Selecting equipment records your research choice. It does not calculate dimensions, establish an available combination or rate a truck.
About this edition & its evidence
Western Star 57X factory brochure · 2022 · dealer-hosted. This 2022 brochure supplies engine and axle ranges but no numerical BBC, width or wheelbase. Similar Cascadia hardware and rounded figures from other publications are not substituted.
DIMENSION GUIDE / A–H
Precision visual reference
Select a measurement to highlight its endpoints and see what the chosen publication confirms.
Western Star 57X · 57X · 2022 factory brochure · 0 published / 8 to verify
Published value Needs verificationSchematic · not to scale
A / SIDE VIEW
Bumper to back of cab (BBC)
Front bumper to the back of the driving cab. Excludes an additional sleeper; it is not overall tractor length.
Not verified
No verified value in this reference. Request an actual measurement.
Original illustrative views; not to scale, a certified drawing or a selected-build rendering. Endpoints explain the measurements. Published values come from the cited reference, never from the image.
Selected reference: Western Star 57X factory brochure · 2022 · dealer-hosted. Published values remain tied to this edition.
View the complete dimension table ↓02 / THE MEASUREMENTS
Published dimensions
57X · 2022 factory brochure
This source establishes equipment context. Verified numerical dimensions have not been added for this configuration.
8 dimensions still to verify · build record / measurement
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| Bumper to back of cab (BBC) | Not verified | Build record / measurement required. |
| Wheelbase | Not verified | Build record / measurement required. |
| Overall tractor length | Not verified | Build record / measurement required. |
| Overall height | Not verified | Build record / measurement required. |
| Cab / body exterior width | Not verified | Build record / measurement required. |
| Width across mirrors | Not verified | Build record / measurement required. |
| Fifth-wheel height | Not verified | Build record / measurement required. |
| Bumper to front axle (BA) | Not verified | Build record / measurement required. |
Planning to transport the truck?
Measure fixed exterior width and mirror width separately, plus overall length, the highest accessory, fifth-wheel height and actual transport weight. Interior bunk width is not exterior width.
03 / UNDER THE SKIN
Powertrain & chassis
Detroit DD13 Gen 5 · Detroit DD15 Gen 5 · Detroit DD16. 2022 highway family · single or tandem drive. Read engine, gearbox and axle ratings together.
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| DD13 Gen 5 power | 370–525 hp276–391 kW | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| DD13 Gen 5 torque | 1,250–1,850 lb-ft1,695–2,508 N·m | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| DD15 Gen 5 power | 425–505 hp317–377 kW | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| DD15 Gen 5 torque | 1,550–1,850 lb-ft2,102–2,508 N·m | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| DD16 power | 500–600 hp373–447 kW | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| DD16 torque | 1,850–2,050 lb-ft2,508–2,779 N·m | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| Detroit front axle options | 12,000–14,000 lb5,443–6,350 kg | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
| Detroit tandem drive options | 40,000–46,000 lb18,144–20,865 kg | Published in the selected manufacturer reference.Western Star 57X factory brochure · 2022 · dealer-hosted ↗ |
Documented cab options
- Day cab
- 60 in Mid Roof
- 72 in Mid Roof
- 72 in Stratosphere High Roof
Documented transmissions
- Detroit DT12 direct-drive AMT
- Detroit DT12 overdrive AMT
This 2022 brochure supplies engine and axle ranges but no numerical BBC, width or wheelbase. Similar Cascadia hardware and rounded figures from other publications are not substituted.
04 / MODELS, YEARS & CHANGES
One badge.
Different reference points.
Publication dates and launch milestones do not establish continuous model-year ranges. Match the VIN, production date and equipment era.
Detroit powertrain and sleeper choices
The brochure separates DD13 Gen 5, DD15 Gen 5 and DD16 ranges and lists DT12 direct and overdrive options.
Western Star 57X factory brochure · 2022 · dealer-hosted ↗Inspection and build evidence
Review aerodynamics, winter systems, aftertreatment, cab electronics and route support.
- factory build
- Detroit engine serial
- DT12 model
- sleeper package
- safety/software history
05 / PUTTING IT TO WORK
Match the trailer to the whole truck.
Day-cab and sleeper highway configurations change wheelbase, tanks, axle ratio and driver amenities.
HIGHWAYTRAILERS.CA
Flatbed
Start with deck length, load placement, axle distribution and cab-to-trailer clearance.
Read the guide HIGHWAYTRAILERS.CAStep deck
Compare deck height, gooseneck geometry and the loaded combination’s height.
Read the guide HIGHWAYTRAILERS.CARGN / equipment hauling
Check neck compatibility, fifth-wheel loading, wet-kit requirements and the complete axle layout.
Read the guide HIGHWAYTRAILERS.CAHow trailer capacity works
Review the tractor, coupling, trailer, tyres and load as one combination.
Read the guidePulling a trailer
Confirm build-specific combination, axle, tyre and coupling ratings, kingpin and service connections, clearance and actual axle weights. GVW is the loaded truck; GCW is the loaded combination. Neither is trailer payload.
Moving the tractor as cargo
Give the carrier measured length, exterior and mirror widths, height, ground clearance and transport weight. Assess deck access, breakover, loaded height and securement together.
Deck height & loaded height ↗There is no single “57X towing capacity”.
The model badge, artwork and catalogue option selectors cannot rate an individual combination. Obtain the actual build limits and scale weights.
06 / FOLLOW THE EVIDENCE
Sources & open questions
Reviewed September 7, 2026. Manufacturer figures remain tied to their stated reference; converted equivalents are rounded; original source units are retained. Application and inspection notes are editorial guidance.
- Western Star 57X factory brochure · 2022 · dealer-hosted ↗
- Daimler Truck — Western Star 57X introduction ↗
- Western Star — X-Series trucks ↗
Reference-specific evidence needed
- Obtain a manufacturer dimensional sheet for BBC, front overhang and wheelbase; reconcile rounded figures in other publications.
- Verify later equipment editions and current order availability.
- Obtain build-specific overall length, exterior and mirror widths, overall height, fifth-wheel height and actual weights.