Farm Ireland
Independent.ie

Tuesday 12 December 2017

Michelin burning rubber with road-compliant tyre

The CerexBib tyre can easily carry combines and is 15pc narrower than convention harvester tyres, which allows it to fall under the 3.5m machine width for road use
The CerexBib tyre can easily carry combines and is 15pc narrower than convention harvester tyres, which allows it to fall under the 3.5m machine width for road use

Bruce Lett

French firm Michelin has developed a tyre capable of carrying a large machine such as a combine harvester, while being 15pc narrower than any conventional harvester tyre.

Developed in conjunction with agricultural machinery manufacturer Claas -- one of four sizes available from launch -- the new Michelin CerexBib tyre can help reduce the stress and hassle associated with moving combine harvesters on the road by bringing in their overall width under 3.5m, the measurement above which an escort is required by European law.

The firm states that the pressures of modern farming have driven a requirement for more powerful and wider harvesters to improve productivity.

"Michelin has responded by developing the innovative new CerexBib tyre with Ultraflex technology. Compared to a conventional tyre, CerexBib offers an additional 20pc load capacity for the same pressure, while the reduced tyre width solves a major headache when transporting combines between fields," said Rob Beddis, Michelin's agricultural division head in Britain and Ireland.

Order

Tom Pine, Claas' UK combine product manager, quotes one use: "For example, the new Lexion 750 is already available to order with 680/85 R 32 CerexBib tyres.

"These reduce the overall vehicle width to 3.3m while still delivering a 12pc larger footprint than the normal 800/65 R 32 tyre."

Michelin says the key to achieving this performance advantage is its patented Ultraflex technology. The company claims its CerexBib tyre is the only commercially available harvester tyre which can work at a pressure of less than 2 bar (29psi), which is around 30pc less than conventional tyres.

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The CerexBib's extremely flexible sidewalls considerably increase ride comfort, even at low operating pressures, while delivering superior stability and safer driving on the road, the manufacturer claims.

CerexBib tyres can be used on both the front and rear axles of combine harvesters. At the moment, the tyres are exclusive to all new Claas Lexion combine harvesters but they will be launched onto the European replacement tyre market next year.

Sizes include the IF 680/85 R 32, VF 520/80 R 26, IF 800/70 R 32 and VF 620/70 R 26.

A further six sizes are in development and will be available at the end of next year.

Irish Independent