Just bought one of these for my V70 (
http://www.bosal.com/en/bosal-tourer) it can have a ramp added and I am very pleased with it - and it tilts. Do not underestimate however the weight of two bikes and a sturdy rack when it comes to tilting it, probably the tilt is a red herring anyway. It is simple and quick enough to load and unload the bikes and then just lift the carrier off - the dog would probably struggle to get past the rack and bikes anyway.