Originally Posted by slagjumper
If you will haul more than 2 bikes, I'd consider a 2" hitch, otherwize get the 1 1/4. There is an issue when you go up a steep hill like a driveway where you are more likely to scrape. There is a 5 rack that needs a 2" but up to 4 you can get by with the smaller. I use them both.
I am also looking into installing a class 1 hitch (1 1/4") onto my '05 Matrix. If I go with a dealer installation it will cost approximately $184 CDN. This is only the hitch installation and not the wiring kit. The cost sky-rockets to $423 with the wiring. Since I do not intend to use the hitch for anything but the bike rack I will save some bucks and have them install the hitch only. Now I have to find a reasonably price bick rack that can lock to the hitch.