The only trailer hitch available that is confirmed to fit the 2016 Infiniti Q70 is the Curt Class I # C11111. For the Q50 we have the Draw-Tite # 24931 or the Curt # C11407, both of which are also Class I hitches. Between those two options for the Q50 I do recommend the Curt because it's made right here in the USA.
Please just not that Curt does require the use of a stabilizing strap # 18050 with any non-trailer loads like a bike rack or cargo carrier.
All of these trailer hitches will... view full answer...