I used this: ‘more uses and does a good job with bikes. Need a tie down strap though. ‘
Dont buy a regular bike rack. Buy a cargo carrier like this if you have Ebikes. They weigh a lot more and youll spend a fortune on a bike rack while this carrier works fantastic. I have two large 75lb Himiway fat tire ebikes and they fit perfectly. Towed then accross the country no problem hanging off the back of my 5th wheel.
Tow Tuff 62 Inch 500 Pound Capacity Steel Cargo Carrier Trailer Car or Truck Rear Bumper Bike Rack, Fits All 2 Inch Receivers, Black https://www.amazon.com/dp/B004RFKBEO/ref=cm_sw_r_apan_glt_fabc_N86YYYGMZ0A7BRB1BJCA?_encoding=UTF8&psc=1
https://www.amazon.com/gp/product/B004RFKBEO/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I have this and it does well. I Easily transport 2 ebikes. The fat tire will fit between the larger sections of the wheel locks
I got this one https://smile.amazon.com/gp/product/B004RFKBEO/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
Works great and doubles as a cargo carrier when you're not carrying your bike. It also has a 500lb capacity so you don't have to worry about the weight of your bikes.
I don’t think I’d trust any hatch mount rack to hold the weight of the S73 let alone two bikes. I’d go with a hitch mount and a cargo carrier.
I use this on the front receiver I installed on my Yukon XL
I have put a few thousand miles under my belt with it. You kinda get used to “seeing through the bikes” kinda like watching something through a chain link fence or kids with long bangs.
Here is it on my truck: https://photos.app.goo.gl/fp7MV5TMt9vflHxq2
Tow Tuff TTF-2762KR Steel Cargo Carrier with Bike Rack https://www.amazon.com/dp/B004RFKBEO/ref=cm_sw_r_cp_api_ffJKAbG3F6BTS