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Approving sub-assemblies and key components

Understand the crucial role of tires in vehicle performance and safety. Learn about tire data assessment, self-aligning torque, cornering force, stiffness measurements, and design requirements for different truck axle types. Ensure authenticity, PBS approval, and potential grading of products.

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Approving sub-assemblies and key components

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  1. by Peter Heatley - Michelin Approving sub-assemblies and key components

  2. Approving sub-assemblies and key components • The tyre is the only point in contact with the road • Apart from carrying the load it provides the means for steering braking & cornering

  3. Approving sub-assemblies and key components • PBS submissions require the use of tyre data assessors to establish vehicle performance • Data required is self aligning moment & cornering force • These measurements are not automatically conducted on all tyres • Original equipment manufacturers use longitudinal & lateral stiffness in vehicle design

  4. Approving sub-assemblies and key components Self Aligning Torque Cornering Force

  5. Approving sub-assemblies and key components • Measurements conducted in approved laboratories • Process subject to audit

  6. Approving sub-assemblies and key components Longitudinal Stiffness Lateral Stiffness

  7. Approving sub-assemblies and key components • Three categories of truck tyres – Front axle, Drive axle, trailer axle • All have differing design requirements – Steering input , torque applied, load carrying

  8. Approving sub-assemblies and key components • All data should be held by central administration to validate authenticity - NHVR • Potential to grade products – A, B, C etc. • End users contacting requesting PBS approved tyres • Roadside service issues • Can a PBS vehicle use re-treads?

  9. Thank you

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