Information on this site is published as a general technical reference for off-the-road earthmover tyres. Factual material is drawn from publicly available manufacturer databooks, the Tire and Rim Association Year Book, Australian Standards (notably AS4457) and OEM fitment guidance. Any evaluation, comparison, shortlist or "which tyre" commentary is the opinion of Jewell Tyres as an independent trader, a trader with 50 years of experience, not a tyre engineer or manufacturer. It is offered as opinion, not as professional or engineering advice, and no duty of care to any reader is assumed.
It is not a substitute for: engineering review of a specific application; current OEM specifications for a specific machine and tyre; manufacturer-provided fitment, mounting, or operating limits; or qualified inspection of a specific tyre at a specific moment in time.
Where this site provides calculations (TKPH, WCF, pressure adjustments, cost models), the calculation methodology is published and the result is illustrative. The user is responsible for confirming the result against current manufacturer data and the actual operating conditions before acting on it.
Mounting, inflating, demounting and handling off-the-road earthmover tyres and rims is inherently hazardous and can cause serious injury or death. This site gives no advice for any specific tyre, machine or situation and does not assume any duty of care to any reader. You rely on the information at your own risk. Safety-critical work must be carried out by qualified personnel under AS4457, WHS obligations and current manufacturer instructions.
To the maximum extent permitted by law, Jewell Tyres Pty Ltd, its directors, employees and contributors exclude all liability for any loss or damage (including indirect, consequential or economic loss, loss of profit, downtime, equipment damage, personal injury or death) arising from use of, or reliance on, this site or the Knowledge Portal. Nothing in these terms excludes, restricts or modifies any consumer guarantee, right or remedy under the Australian Consumer Law or other law that cannot lawfully be excluded; where liability can be limited, it is limited to re-supplying the information or the cost of re-supply.
The Knowledge Portal generates answers using an automated AI system (retrieval-augmented generation over manufacturer databooks and AS4457 material) and third-party AI providers. AI output may be incomplete, out of date or incorrect, and citations do not guarantee accuracy.
Portal answers are general technical reference and the opinion of an independent trader only, not professional or engineering advice. Verify every figure, especially pressures, loads, fitment, mixing and repair decisions, against current OEM/manufacturer documentation and qualified inspection before acting.
All disclaimers, no-reliance provisions and the limitation of liability above apply equally to Portal output, including error and fallback responses.
Information is provided 'as is' and 'as available'. To the maximum extent permitted by law we give no warranty that content is accurate, complete or current.
Manufacturer databooks, standards and OEM specifications are revised over time; editions referenced or linked here may have been superseded. Always confirm against the current published edition and the manufacturer before acting.
Technical specifications referenced on this site are drawn from publicly available manufacturer databooks. Where a tyre record cites a Bridgestone, Michelin, Goodyear, Yokohama, Continental, BKT, Aeolus, Techking, Triangle, Double Coin, Galaxy, Alliance, Mitas, MRF, Solideal/Camso, Titan, Trelleborg, Firestone, or other source, that source is the manufacturer's own published material.
TRA service code material is sourced from the Tire and Rim Association Year Book (current edition). AS4457 material is paraphrased from AS4457:2019. OEM fitment guidance is drawn from Caterpillar, Komatsu, Volvo, Liebherr, Hitachi, Bell and Doosan technical documentation.
All trademarks remain the property of their respective owners. Manufacturer names and pattern designations appear on this site for reference and identification only. This site is independent and not endorsed by any tyre manufacturer. Performance, service-life and cost characterisations on this site reflect manufacturer published material and Jewell Tyres' trading experience; they are general estimates and opinion, not independently verified test results or any warranty of performance.
This site links to third-party resources, including manufacturer databooks and standards bodies, some hosted by distributors. We do not control and are not responsible for the content, accuracy, currency or availability of any external site or document. Links are provided for convenience and do not imply endorsement. Always confirm you are using the manufacturer's current official edition.
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Questions you submit to the Knowledge Portal are transmitted to and processed by third-party service providers to generate an answer, including AI providers (Anthropic) and hosting/database providers (Cloudflare and Supabase). Some of these providers process data overseas, including in the United States. Please do not enter personal, confidential or commercially sensitive information into the Portal. This overseas processing is disclosed for the purposes of Australian Privacy Principles 1, 6 and 8.
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Any data submitted through a form is used to respond to that submission. Data is held by Jewell Tyres Pty Ltd. You can request access, correction or deletion of your data at any time by emailing tyres@jewelltyres.com.au.
This site operates under the Australian Privacy Principles (Privacy Act 1988).
By using this site or the Knowledge Portal you accept these terms. If you do not accept them, do not use the site.
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You may quote, link to, and share content from this site. If you publish a piece that draws materially on this site's content, an attribution and link back to otrearthmovertyres.com is appreciated but not required.
You may not republish substantial portions of this site as your own, scrape the site for commercial training of language models or AI agents without permission, or use the site's content in a way that misrepresents independence (e.g. publishing material as manufacturer-aligned content). These are the only restrictions.
You are responsible for how you use the information on this site and for verifying it before acting. You agree to indemnify Jewell Tyres Pty Ltd against claims arising from your misuse of the content or your breach of these terms.
This site is operated from Victoria, Australia. Any dispute arising in relation to this site is governed by the laws of Victoria and subject to the non-exclusive jurisdiction of Victorian courts.
If any provision of these terms is found unenforceable, it is severed and the remaining provisions continue in force. We may update these terms from time to time; the version published here applies to your use. These terms are published by OTR Earthmover Tyre, operated by Jewell Tyres Pty Ltd (ABN 65 623 463 511).