Fleet typeIdentity
Asset-based
18 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 500110
TANDEM TIRE & AUTO SERVICE
DBA TANDEM TIRE SERVICE
18 power unitsDUBUQUE, IA
CARRIER ACTIVE
Observed fleet · trailing 24 mo daily
18Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Awaiting decode
Click to see how we scored it
Load decision · FMCSA snapshot · 2026-06-13
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
Established 34 years
Watch · 0
Nothing flagged.
In good standing · 1
Operating authority3333 yr active
since 1992Insurance (BIPD)Unknown
FMCSA L&IVehicle OOS · 24mo—%
▼ 22.26% nat'lCrashes · fatal00
clean 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Awaiting VIN decode
Identity stabilityStable
33 yr unchanged
Same registration since 1992 — no chameleon / reincarnation signal.
AI readFull read
Is TANDEM TIRE & AUTO SERVICE safe to work with?
Is TANDEM TIRE & AUTO SERVICE safe to load? TANDEM TIRE & AUTO SERVICE (USDOT 500110) is an active asset-based motor carrier based in DUBUQUE, IA, operating 18 power units and 4 drivers. Operating authority has been active 33 years (past the 24-month broker-confidence threshold). Across 1 roadside inspections, with 0 reportable crashes in the last 24 months. FMCSA has not assigned a safety rating. Vektor rates it unrated (50/100). Source: FMCSA SAFER/MCMIS, last updated 2026-06-13.
FMCSA fields + Vektor analysis · updated 2026-06-13
TTTANDEM TIRE & AUTO SERVICE 50
01
Safety
1 inspections · 24 mo · vs national benchmarks
Out-of-service rate· trailing 24 months vs national benchmark
Vehicle OOS —% (24-mo)0 veh insp · 24-mo · nat'l 22.26%
050%nat'l 22.26%
Driver OOS —% (24-mo)0 drv insp · 24-mo · nat'l 6.67%
030%nat'l 6.67%
Violation themes· decoded · grouped by BASIC
What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.
- 390.21 USDOT number marking on vehicleUnsafe Driving1
- 391.41 No / expired medical certificateDriver Fitness1
- 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1
02
Authority & insurance
Can they legally + adequately haul your load?
Insurance continuity· insurer · policy · lapses
No insurance filing history on record.
03
Equipment & fleet
VIN-decoded · NHTSA vPIC
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 18
- Observed power (24 mo)
- —
- Trailers (towed)
- —
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
04
Operations & lanes
Revealed by inspection density · 24 mo
Inspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
DUBUQUE, IA
Density
fewermore
05
Network & fraud
Affiliated entities & reincarnation signals · for review, not a verdict
Shares a company officer with other carriers
mark griffin — 16 carriers: USDOT 113606USDOT 434635USDOT 1166584USDOT 1302610USDOT 1328811USDOT 1384789USDOT 1738516USDOT 1765415
06
Identity & contact
FMCSA census + L&I dossier
Location
- Physical address
- 400 HARRISON ST, DUBUQUE, IA, 52003
- Mailing address
- PO BOX 717, DUBUQUE, IA, 52004
- Operation
- Interstate
Contact
- Phone
- (563) 583-4668
- Fax
- (563) 556-3873
- Web domain
- tandemtire.com
Registration
- Officer
- Mark Griffin
- USDOT / docket
- 500110
- First registered
- 10/02/1992
- Last MCS-150
- 09/04/2025 · 100,000 mi (2022)
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
07
Federal activity
Daily-captured FMCSA licensing & insurance changes — monitored by Vektor
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.
08
Reviews
Verified broker, shipper & driver reviews — moderated
Performance ratings only — never the Vektor risk score
No verified reviews yet
Be the first broker or shipper to rate TANDEM TIRE & AUTO SERVICE. Reviews cover performance only — on-time delivery, payment speed, communication — and never affect the Vektor risk score.
Leave a review09
Frequently asked
What is TANDEM TIRE & AUTO SERVICE's USDOT number?
TANDEM TIRE & AUTO SERVICE's USDOT number is 500110.
Is TANDEM TIRE & AUTO SERVICE authorized to operate?
As of 2026-06-13, TANDEM TIRE & AUTO SERVICE is active in the FMCSA register.
What is TANDEM TIRE & AUTO SERVICE's safety record?
TANDEM TIRE & AUTO SERVICE has a —% vehicle out-of-service rate across 1 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 50/100 (tier: unknown).
How big is TANDEM TIRE & AUTO SERVICE's fleet?
TANDEM TIRE & AUTO SERVICE operates 18 power units and 4 drivers per its most recent MCS-150 filing.
Where is TANDEM TIRE & AUTO SERVICE based?
TANDEM TIRE & AUTO SERVICE is based in DUBUQUE, IA.