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Understanding and controlling
interior noise at system level
When tire, wheel and cavity
interactions drive interior
noise and comfort
Explore more
Understanding how tire, wheel and the air inside the cavity cavity interact is key to controlling cabin noise in complex vehicle development contexts, where component-level approaches reach their limits.
- Identify interior noise root causes at system level
- Anticipate NVH issues earlier in vehicle development
- Improve interior comfort without adding weight
What we do
MICHELIN SIMIX provides an engineering service to help understand and control interior noise generated by tire-road interaction, using our simulation capabilities.
We can help you address situations where interior noise cannot be clearly explained or mitigated using tire-only data or isolated component analysis by simulating the tire-wheel-cavity system as a whole.
It builds on Michelin’s long-standing expertise in tire behavior, vehicle dynamics and NVH engineering, combined with physical understanding and simulation-based approaches, to help vehicle development teams make sense of complex NVH phenomena and support informed design decisions.
What is addressed
- Interior noise originating from tire–road interaction
- Structural and acoustic resonances involving the tire, the wheel and the enclosed air cavity
- Coupling effects between tire behavior, wheel dynamics and vehicle response
- Frequency-dependent noise phenomena impacting passenger perception
This system-level NVH approach is particularly relevant for electric vehicles, where the absence of engine masking and strict mass constraints make tire-related noise more critical than ever.
What you will get
- A clear understanding of how tire, wheel and the enclosed air cavity contribute to interior noise
- Identification of critical frequencies and interaction mechanisms
- Engineering insights to guide design trade-offs and optimization paths
- Recommendations to improve NVH performance without relying on heavy acoustic insulation
Ovalization
How it works
1
Framing the NVH challenge
We start by understanding the vehicle architecture, usage conditions and observed interior noise issues.
2
System-level analysis
Numerical simulations are calibrated and validated against real measurements on the shared, known domain
3
Insight and interpretation
Critical contributors and coupling effects are identified and translated into clear engineering insights.
4
Decision support
Results are shared to support NVH-related design decisions on the tire, the wheel or the vehicle side.
Control interior noise at system level. Not component by component.
Discuss your NVH challenge with our experts
Resources
Why NVH performance starts with a Tire Wheel Cavity Modal Model
A technical deep dive explaining how tire, wheel and cavity interactions contribute to interior noise and why system-level analysis is required to address NVH challenges.
Read the article
Turing Inc. using system-level simulation to address complex NVH challenges
Learn how Turing Inc. leveraged MICHELIN SIMIX expertise to better understand noise phenomena and support informed engineering decisions in advanced vehicle development projects.
Read the customer story
Your tire wheel cavity NVH questions, answered
What is tire cavity resonance noise and why does it matter?
Tire cavity resonance noise originates from acoustic resonances of the air enclosed within the tire. It is one of the most noticeable sources of interior noise in electric vehicles, where engine masking no longer exists to cover it.
Why is a system-level NVH approach more effective than component-level analysis?
Component-level approaches analyze tire, wheel or vehicle in isolation. When interior noise cannot be explained or mitigated by a single component, system-level analysis is required. Because the interactions between tire behavior, wheel dynamics and cavity resonance are the actual root cause.
How does the tire–wheel–cavity system affect interior noise?
Noise generated at the contact with the road propagates through the tire, the wheel and the enclosed air cavity before reaching the vehicle. Their coupled behavior strongly influences interior noise levels.
Why is tire-related NVH more critical in electric vehicles?
Without engine noise masking and with limited use of acoustic insulation, tire and road noise become dominant contributors to interior noise in EVs.
How does tire cavity noise differ from other NVH sources?
Tire cavity noise originates from acoustic resonances of the air enclosed within the tire, which can interact with tire and wheel structural modes and significantly influence interior noise perception.
Is this service relevant if the issue is already identified?
Yes. Even when a noise issue is known, system-level analysis helps understand interactions and avoid late-stage fixes with limited effectiveness.
Does this service replace physical testing?
No. It complements testing by helping interpret results and extend understanding beyond what measurements alone can provide.
related services
This service is often combined with other MICHELIN SIMIX services to support NVH analysis and vehicle development at system level.
Chassis characterization & model creation
Digitalize your vehicle through physical measurements and simulation-ready models, providing the reliable foundation your chassis development teams need to make confident design decisions.
Learn more
Track assessment
Detect chassis handling and stability issues before qualification, through structured instrumented track evaluation combined with expert driver assessment.
Learn moreImprove interior comfort through system-level NVH understanding.
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