Tyres for Armitage
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IF THE 40 tonne proposals are accepted, Michelin sees nc change in the tyre sizee popularly used on tractive unit; such as the 11R22.5 tubeless.
For existing four axle tractivE unit/semi-trailer combination operating at 32 tons, this tyr( will be adequate for 34 tom operation.
Michelin anticipates that th4 most significant change coulc arise with tri-axle semi-trailer! which will be necessary to run a 38 tonnes with a two axle trac tive unit.
In this case, Michelin suggest that the use of 15R22.5 single such as the Michelin Doublex 01 the trailer with the tractive uni staying on 11R22.5 and predict that the weight changes couli mean the increasing use of wid single tyres.
The proposed increase i drive axle weight to 10.5 tonne poses no problem for the contir ued use of the 11R22.5 accorc ing to Michelin or the new 80 pE cent profile replacement tyr 275/80R 22.5
Michelin claims that this lo profile tyre has a higher spee
capability at maximum loac than tyres in current use an could assist in areas where th proposed height restrictio would cause difficulties.
The tyres are also claimed have a lower power consurni tion and to weigh less.