Management review that actually improves the business
Learn how to run an ISO 9001 Clause 9.3 management review that turns evidence into decisions, with the right inputs, actionable outputs, and a cadence that fits your risks.
STANAG 4825
STANAG 4825 run-flat wheel assessment for land vehicles
Makers of run-flat wheels and tyres for military land vehicles, and the defence buyers who specify and test them.
STANAG 4825 sets out how to test run-flat wheels for military land vehicles, so a wheel damaged in combat still keeps the vehicle mobile. NATO has not released it publicly; this page describes it from the Czech defence standard that implements it.
- Edition
- 1
- Published
- 2021-05-18
NATO has not released this STANAG publicly. It is NATO UNCLASSIFIED, and organisations that need it obtain it through their national standardization authority.
What it is
STANAG 4825 is the NATO Standardization Agreement on the procedure for the assessment of run-flat wheels for land vehicles. Edition 1, promulgated in May 2021 under NATO's CNAD, AC/225 NAAG, LCGLE, covers the publication AEP-4825(A). Its aim, as the Czech implementing standard's index entry states, is to ensure common test methods and the sharing of data from national tests.
NATO has not released STANAG 4825 or AEP-4825(A) publicly. This page describes them from a public national implementation, the Czech defence standard ČOS 261001 (1st edition, effective from 24 November 2023), which states that it introduces STANAG 4825 edition 1 and AEP-4825(A)(1) into Czech use. A national implementation can add national requirements and reservations, so treat what follows as the Czech implementation's content, not as NATO's own text.
What the Czech implementation requires of a run-flat wheel
ČOS 261001 requires that a run-flat wheel, despite a puncture or damage to the tyre, keeps the vehicle mobile for a predetermined time without the wheel being changed. The technology must come as close as possible to a normal wheel and meet the tyre specification, such as the load and speed index, set for the vehicle it is fitted to; the tyre itself must meet the same specification as an ordinary tyre on that vehicle. An assessment covers the whole combination of rim, run-flat system and tyre together, and is no longer valid if any one of those three changes.
Tyres put forward for the test must have at least 50 percent of their tread life remaining and be no more than 60 months old. The vehicle is loaded to its greatest technically permissible weight, with axle and wheel loads recorded first. The most heavily loaded wheel is damaged; on a vehicle with dual-mounted wheels or more than two axles, every most heavily loaded wheel on one side is damaged, all to the same configuration. Any central tyre inflation system is switched off and differential locks stay disengaged throughout, and a vehicle without power-assisted steering has its steered wheels left undamaged. Testing runs only in dry weather, with ambient air between 10°C and 38°C and average wind under 3 m/s.
The drive test that proves mobility after damage
Once a wheel has been deliberately damaged, including by controlled ballistic fire that simulates combat damage, the vehicle must complete a 100 km circuit of 10 percent paved road and 90 percent field and forest track, with bends of 25 to 100 metre radius: 10 km at up to 90 km/h, 20 km at 50 km/h and 70 km at 25 km/h. The test counts as successful only if the vehicle covers the full distance without the damaged wheel detaching from the rim, the tread separating from the carcass, a rim touching the ground, the vehicle losing continuous mobility or safe control, its speed falling below the required value, or a wheel catching fire. A facility qualified for military vehicle testing under ČOS 051628 runs and evaluates the test, or, if another NATO nation's facility runs it under STANAG 4358, a Czech facility evaluates it afterwards and recommends whether to accept it for Czech army use.
How we help
A supplier bound by STANAG 4825 through a contract holds the obtained text through its national authority. In ComplyTrain you record the requirements that apply to you as your own requirements, give each an owner, and keep the evidence that shows you meet them against each one.
Request access to this standard
Tell us how you need to work with STANAG 4825 and what you need from it. We will come back to you about what ComplyTrain can do.
Thank you. Your list is on its way to your inbox, and we will come back to you on what working with these standards in ComplyTrain involves, usually within one business day.
What ComplyTrain does
One system for the whole compliance programme. Start with the module you need most.
Forms & Follow-up
Collect information the same way every time, and decide in advance what happens next.
Controls & Assurance
Know whether your controls are operating, not just whether a policy says they exist.
Project Planner
Turn the compliance work you already know about into a plan with owners, dependencies and dates.
Product Compliance
Know what you can offer, and hold the evidence behind every configuration you offer it in.
Reporting & Analytics
Eight built-in reports across every module, scheduled, delivered, and filed where the evidence lives.
Media Monitoring
The sector news that matters to your organisation - read and rated by AI, and delivered as a scheduled digest in your own language.
Grants & Tenders
AI reads the tender pack and pulls out the requirements, deadlines and rules - then helps you draft the response from your own approved content, with you reviewing every step.
Stakeholder/Vendor Management
One current register of the suppliers and partners you depend on - each risk-assessed, re-assessing itself on schedule, and wired straight into your risk register.
Requirements Management
See every requirement you face - across every standard, plus your own contracts and policies - traced to the documents, evidence and processes that satisfy it.
Risk Management
Identify, score, treat and review your risks in one place - with AI to help anyone run a proper assessment, and a defensible trail behind every decision.
Training Management
Assign training, prove it was understood, and hold the competence records an auditor asks for.
Document Control
Draft compliance documents with AI, keep every version under control, and export them beautifully branded - all in one place.
Quality Management
Audits, corrective actions, processes and approvals in one quality system, organised around ISO 9001.
Latest from ComplyTrain
ISO 9001 audit: what happens, stage by stage
The types of ISO 9001 audit, what Stage 1 and Stage 2 each check, how nonconformities are graded and closed, and how to prepare for your first certification.
Three partners, three Member States, one evidence base
The EDF consortium rule is usually quoted as three entities from three Member States. It has a second limb about control that the word independent quietly hides, and two exceptions that disapply it entirely.
Other standards in Land armaments
- AEP-3.12.1.5AEP-3.12.1.5 military load classification of bridges, ferries, rafts and vehicles
- AEP-64AEP-64 paint systems resistant to chemical agents and decontaminants
- AEP-65AEP-65 test method for paint systems resistant to chemical agents
- AEP-94AEP-94 skin penetration assessment for non-lethal projectiles
- AEP-97AEP-97 multi-calibre manual of proof and inspection for NATO small arms ammunition
- AEP-98AEP-98 precision assessment of non-lethal kinetic energy weapons and ammunition