/ About this site

An independent technical reference for off-the-road tyres.

Built and maintained by Jewell Tyres, Australia and New Zealand's independent specialist in big tyres since 1974. Free to use. Ad-free. Not aligned to any manufacturer.

/ Key facts

OTR Earthmover Tyre is published by Jewell Tyres (Keelangie Nominees Pty Ltd as trustee for the D.G. & C.V. Jewell Family Trust), a family-owned independent OTR tyre trading business in Wodonga, Victoria, founded by David Jewell in 1974.
Jewell Tyres trades off-the-road tyres into mining, civil construction, ag, forestry and industrial fleets across Australia and New Zealand, covering 19 brands and rim diameters from 24 inch to 63 inch.
The reference corpus is built from six source families: manufacturer databooks across 19 brands, the TRA Year Book, AS4457:2019, OEM fitment guides from 7 machine makers, Tyre Stewardship Australia material, and 50 years of trading experience.
No tyre manufacturer sponsors the site, reviews content before publication, or receives preferential placement.
The site is free and carries no advertising. The only commercial tie is to Jewell Tyres, which trades the tyres referenced here.

/ Premise

Why does this site exist?

SECTION 01

PREMISE

Most of what's published about OTR tyres lives inside manufacturer databooks. Bridgestone has theirs. Michelin has theirs. Goodyear, Yokohama, Continental, BKT, Aeolus, Techking, Triangle, every brand publishes their own.

Each one is manufacturer-aligned. Each one is behind a PDF download. None of them are searchable across brands. None of them are cross-referenced. None of them tell you what the tyre next door actually does in the same application.

That gap is why this site exists. We've spent five decades collating manufacturer material to do our own trading job, matching tyres to machines, machines to applications, applications to conditions. The working knowledge that lives in our spreadsheets, our heads, and our supplier relationships.

This site is that working knowledge, made available. Free. Searchable. Cross-brand. Independent. The reference we wish had existed when we started, and the reference we think the industry needs now.

/ Maintained by

Who are the independent traders behind it?

SECTION 02

MAINTAINERS

OTR Earthmover Tyre is maintained by Jewell Tyres, a family-owned, independent OTR tyre trading business operating from Wodonga, Victoria since 1974.

David Jewell founded the business in 1974. Fifty years on, Jewell trades off-the-road tyres into mining, civil construction, ag, forestry and industrial fleets across Australia and New Zealand, every brand, every application, every size from 24" loader tyres through to giant 63" haul truck tyres.

The technical knowledge that powers this site comes from trading. From watching tyres go on machines, watching how long they last, watching what fails and why, watching how the OEMs price and ration and allocate. Fifty years of that.

/ Jewell Tyres at a glance

Founded 1974

Founder David Jewell

Location Wodonga VIC

Trading area AU + NZ

Brands traded 19

Rim range 24″-63″

Independence No OEM alignment

/ Sources

Where does the data come from?

SECTION 03

METHODOLOGY

/ 01 · MANUFACTURER DATABOOKS

Every brand's specifications

Pattern names, sizes, TRA codes, load indices, speed symbols, recommended pressures, tread depths, compound options. Pulled from current databooks across 19 brands.

/ 02 · TRA YEAR BOOK

Service code standards

The Tire and Rim Association Year Book, the cross-manufacturer reference for service codes, construction types, and load tables. Updated annually.

/ 03 · AS4457

Australian safety standard

AS4457:2019, the Australian standard for OTR wheel and tyre maintenance and safety. The basis for mixing rules, inspection guidance, and compliance language on this site.

/ 04 · OEM FITMENT GUIDES

Machine-to-tyre fitment

Caterpillar, Komatsu, Volvo, Liebherr, Hitachi, Bell, Doosan fitment specifications. The right tyre size and load class for each machine series, with OEM-recommended alternatives.

/ 05 · TYRE STEWARDSHIP

Disposal and regulation

Tyre Stewardship Australia material on end-of-life tyre handling. State-level disposal regulations. Compliance language on retreading, second-life applications, and recycling.

/ 06 · TRADING EXPERIENCE

50 years of working knowledge

What manufacturer databooks don't tell you, what actually fails in the Pilbara summer, which mid-tier patterns earn their place, what an honest delivered price looks like. The judgement layer.

/ Independence

No manufacturer paid for any of this.

OTR Earthmover Tyre is editorially independent. No manufacturer sponsors the site. No manufacturer reviews the content before it's published. No manufacturer gets preferential placement in the Tyre Guide, the Knowledge Portal, or the Market Notes.

When the Portal says Brand X is the better fitment for a machine in a particular application, that's the call, not what a sponsor wanted said. When a piece in Market Notes says a tier-one premium isn't worth it for a secondary fleet, that's the call.

The only commercial tie on this site is to Jewell Tyres, and that tie is openly endorsed, not hidden. Jewell maintains the site. Jewell is the trader you'd talk to if you wanted to buy or sell any of the tyres referenced here. The endorsement is the point: independence from manufacturers, anchored to a 50-year independent trading business.

/ Powered by Jewell Tyres

Australia and New Zealand's independent specialists in big tyres. 50 years. No BS.
Independent of every manufacturer. Aligned to one principle: point to the tyre that actually fits.

/ Common questions

Questions about who runs this site

Who publishes OTR Earthmover Tyre?

Jewell Tyres publishes OTR Earthmover Tyre. Jewell Tyres is a family-owned, independent off-the-road tyre trading business founded by David Jewell in 1974 and based in Wodonga, Victoria, trading across Australia and New Zealand.

Does any tyre manufacturer pay for or approve this content?

No. No manufacturer sponsors the site, reviews content before publication, or receives preferential placement in the Tyre Guide, the Knowledge Portal or the Market Notes. The site carries no advertising and is free to use.

Where does the technical data on this site come from?

Six sources: manufacturer databooks across 19 brands, the Tire and Rim Association Year Book, AS4457:2019, OEM fitment guides from 7 machine makers, Tyre Stewardship Australia material on disposal, and 50 years of Jewell Tyres trading experience. Specification values are reference that may be superseded by a later databook edition, so confirm them against current manufacturer and OEM data before acting.

What does independent mean when the publisher also sells tyres?

Independent here means independent of every tyre manufacturer, not disinterested. Jewell Tyres holds no manufacturer alignment, distributorship or sponsorship, and trades all 19 brands in the directory. It also trades the tyres referenced on this site commercially, and says so on every page rather than hiding it. Read the evaluative content as the opinion of a trader with skin in the game.

How do I report a mistake or a missing tyre?

Send it through the contact page. Wrong specifications, missing patterns, out-of-date figures and tyres that should be in the Tyre Guide are all worth telling us about. Corrections are how the reference improves, and we would rather be told than be wrong.