Launched in time for the 2008 season, John Deere T-series combines feature a so-called ‘TTS — Tangential Tine Separation’ system. In outline, TTS adds a tine separator set-up behind the drum, boosting active separation area to 2.80m2 on the five-walker and 3.36m2 on the six-walker machines. Otherwise similar to the W models introduced at the same time, the T-series has since taken over as Deere’s top selling walker line, with a decent supply of second-hand examples now coming to the market