Last year since starting in August, my 8 year old Walmart mountain bike lived on the trunk mount bike rack on my car. It sat there in the sun or rain as I get up early for work (4:50 am) and don't have the time to mess wuth mounting the bike up and I stop on the way home to ride.
It was a Walmart bike so I didn't expect anyone to steal it nor did I careabout rain. Rain wouldn't make it any worse after all, it was an 8 year old bike with even still the original chain. Very worn out.
Now with my new bike that to me, $600 is a LOT of cash, I don't want it sitting unsecured on the back of my car. I also definitely don't want it sitting out in the rain overnight or at work until it dries up and I ride after work. Now with the quick disconnect front wheel, it is super easy to just slip it in the trunk with the back seat folded down, obviously not on the derailleur side.
I am wondering if this would be ok over the long run for it to live on its side in the car. My car is just a work runner as I typically take my wife's vehicle any time i go anywhere other than work.
For the record, just commuting to work I put about 15-18,000 miles on the car a year. Our roads here in north western PA also aren't the greatest so the car and thus the bike willbe bouncing quite a bit. In the trunk, the bike is layed on the back tire and right hand pedal touching the floor of the trunk. I want to be assured that this would be ok i the long run.