cav551:
I have a feeling that BTC (British Trailer Company) used to run advertisements in commercial Motor and the FTA year books which claimed that the axle weight for a four- in- line trailer on suitable tyres was 11 tons.
Your quite right the 4-in-line axle was rated at 11tons and BTC were the main manufactures at time although other trailer builders such as York built four-in-lines.I knew the former Sales Director of BTC,Jim Walmsley aka “Pugwash” a long time afterwards BTC had finished and he was running Municipal Trailers of Bamber Bridge.Cheers Bewick.