Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X7MD735870 · Truck-Tractor · TRUCK
Carriers run under2
21 mo
Inspections4
all-time
OOS inspections0
of 4
First seenDec 14, 2023
SD
Last seenSep 22, 2025
TN
Inspected under 2 different carriers in 21 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
1XPBDP9X7MD735870
Make
Peterbilt
Model
579
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 14, 2023 – Sep 22, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 22, 2025TNIII · Driver-only0—ROCK 180 TRANSPORT LLC 3662486V7526HY/TN
May 4, 2024KSII · Walk-around0—EW WYLIE LLC 82762212917P/ND
Jan 23, 2024COIII · Driver-only0—EW WYLIE LLC 82762212917P/ND
Dec 14, 2023SDIII · Driver-only0—EW WYLIE LLC 82762212917P/ND
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCK 180 TRANSPORT LLC3662486Sep 22, 2025Sep 22, 20251TN
EW WYLIE LLC827622Dec 14, 2023May 4, 20243ND
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.
V7526HYTN—ROCK 180 TRANSPORT LLCSep 22, 2025 → Sep 22, 20251
12917PND—EW WYLIE LLCDec 14, 2023 → May 4, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026