100,000-mile Tyre Life at Speed
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TYRE mileages of well over 100,000 were being obtained on heavy vehicles operating at continuous high speeds in the U.S.A. This was one of the points mentioned by Mr. John Moon, technical editor of The Commercial Motor, when he spoke to the Eastern Area of the Traders' Road Transport Association at Ipswich on Wednesday.
His subject was the use of commercial vehicles on motorways. The importance of good braking was emphasized, and Mr. Moon observed that so far disc brakes had presented a number of unusual problems, including the melting of grease in wheel hubs.
An ideal maximum-capacity eightwheeler needed an engine of at least 200 b.h.p., with an axle ratio of up to 5 to I, to take full advantage of motorways, added Mr. Moon.