Many big-scale UK arable businesses prefer the rubber-tracked route when looking to transfer maximum tractor power to the ground and tread softly; for proof, just refer back to our cost management reports over the past 15 years. But what of tyres? Their technology has come on a long way over the same time period — as, incidentally, has that of articulated tractors? New Holland is an enthusiastic advocate of the tyred artic principle, as witnessed here in the shape of the new T9