We do offer one hitch receiver for your 2011 Infiniti G37 Convertible, Class I hitch part # C11068 from Curt. This unit is a 1-1/4-inch light-duty hitch with a rated tongue weight capacity of 150-lbs. We do not offer a 2-inch hitch for your G37 convertible.
There are a couple of concerns related to use of your existing 2-inch hitch-mount carrier with this Class I Curt hitch.
First, this Class I hitch itself is capable of carrying only 2 bikes, even if the rack you have can hold more... view full answer...
We have a hitch that will work on your vehicle. According to my contact in the engineering department at Curt Manufacturing, their Class I hitch, part # C11499 is indeed compatible with the 2011 AWD G37X sedan.
The hitch would make an excellent attachment point for a bike rack or cargo carrier. If you were planning on doing some light duty towing, you'll also need the following to complete your towing system:
Trailer wiring harness, part # 118480
Ballmount, part # C45521
Pin and clip,... view full answer...