I am just getting back into bicycling after 20 years (kids will do that to you). Before buying a new bike, I need to find a way to transport the bicycle with my car (my home is an area that makes bicycling directly to/from impractical). My small car will not handle a roof rack and I have been told by several bike shops that a trunk mounted rack won't work either. This leaves me with a the option of a hitch type bicycle rack. From browsing the internet, I see that bike hitch mounts come in two sizes: 1.25 or 2 inches. I am wondering which size to buy. I plan to carry at most 2 bikes.

I appreciate any advice you can offer.