Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9X6PD878135 · Truck-Tractor · TRUCK
Carriers run under1
22 mo
Inspections7
all-time
OOS inspections1
of 7
First seenDec 11, 2023
TX
Last seenOct 17, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPBDP9X6PD878135
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BDP9X

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1993 or 2023

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
878135

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
PETERBILT

Prefix basis · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 11, 2023 – Oct 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 17, 2025TXII · Walk-around1SOUTHERN TIRE MART LLC 1157500A548287/MS
Dec 30, 2024TXII · Walk-around0SOUTHERN TIRE MART LLC 1157500A548287/MS
Nov 1, 2024TXII · Walk-around2SOUTHERN TIRE MART LLC 1157500A318356/MS
Oct 3, 2024TXI · Full0SOUTHERN TIRE MART LLC 1157500A318356/MS
Aug 23, 2024TXII · Walk-around1OOSSOUTHERN TIRE MART LLC 1157500A318356/MS
Jul 16, 2024TXII · Walk-around3SOUTHERN TIRE MART LLC 1157500A318356/MS
Dec 11, 2023TXII · Walk-around2SOUTHERN TIRE MART LLC 1157500A318356/MS
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHERN TIRE MART LLC1157500Dec 11, 2023Oct 17, 20257MS
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
A548287MSSOUTHERN TIRE MART LLCDec 30, 2024Oct 17, 20252
A318356MSSOUTHERN TIRE MART LLCDec 11, 2023Nov 1, 20245
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026