Equipment unit · VIN-decoded · NHTSA vPIC

2021 X-L Specialized Trailers Inc

4U3S00511ML020293 · Trailer · TRAILER
Carriers run under2
27 mo
Inspections8
all-time
OOS inspections3
of 8
First seenSep 6, 2023
WI
Last seenDec 29, 2025
MD
Inspected under 2 different carriers in 27 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
4U3S00511ML020293
Make
X-L Specialized Trailers Inc
Model
X-L SPECIALIZED TRAILERS INC
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 18, 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
4U3

Deterministic · VIN positions 1–3.

Vehicle descriptor section
S0051

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1991 or 2021

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

North American serial sequence
020293

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
X-L SPECIALIZED TRAILERS INC

Prefix basis · 124 decoded VINs at 100.0% prefix purity.

Model
X-L SPECIALIZED TRAILERS INC

Prefix basis · 124 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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
X-L SPECIALIZED TRAILERS INC

Observed directly for this VIN via NHTSA vPIC.

Observed model
X-L SPECIALIZED TRAILERS INC

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

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 · Sep 6, 2023 – Dec 29, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 29, 2025MDII · Walk-around8OOSZMAXIM CORP 4053610983946ST/IL
Dec 29, 2025MDII · Walk-around6OOSZMAXIM CORP 4053610983946ST/IL
Nov 19, 2025OHII · Walk-around6OOSZMAXIM CORP 4053610983946ST/IL
Oct 24, 2025TNIII · Driver-only0ZMAXIM CORP 4053610983946ST/IL
Sep 19, 2025MIIII · Driver-only1ZMAXIM CORP 4053610983946ST/IL
Jun 30, 2025OHIII · Driver-only1ZMAXIM CORP 4053610983946ST/IL
Dec 16, 2024MDII · Walk-around1ZMAXIM CORP 4053610983946ST/IL
Sep 6, 2023WIII · Walk-around4PALADIUM TRANSPORTATION INC 3589868880928ST/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ZMAXIM CORP4053610Dec 16, 2024Dec 29, 20257IL
PALADIUM TRANSPORTATION INC3589868Sep 6, 2023Sep 6, 20231IL
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.
983946STILZMAXIM CORPDec 16, 2024Dec 29, 20257
880928STILPALADIUM TRANSPORTATION INCSep 6, 2023Sep 6, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026