Abstract
This document specifies methods for measuring tyre-to-road sound emissions from tyres fitted on a motor vehicle under coast-by conditions, i.e. when the vehicle is in free-rolling, non-powered operation. This is typically achieved by putting the transmission in the neutral or equivalent position and switching off the engine as well as all auxiliary systems not necessary for safe driving.
This document is applicable to passenger cars and commercial vehicles as defined in ISO 3833. It is not intended to be used to determine the sound contribution of tyres of vehicles running in powered condition nor for the determination of traffic sound nuisance at a given location.
Amendments
Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.
Life cycle
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Previously
WithdrawnISO 13325:2003
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Now
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Preliminary
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Proposal
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Preparatory
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Committee
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Enquiry
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Approval
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Publication
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Review
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Withdrawal
Amendments
Provide additional content; available for purchase; not included in the text of the existing standard.PublishedISO 13325:2019/Amd 1:2023
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