Hi. I have a 2016 Traveller and would like to carry bikes on the back, preferably without fitting a tow bar. The Thule BackPac seems to be recommended on some sites, but others say the tailgate isn’t strong enough. Has anyone used one, or got an alternative? I don’t want the bikes to hang off the rack, as they’re full sus MTBs and don’t fit hanging racks well. Peugeot won’t commit to an answer. Thanks!