Always used bike trialer but recently purchased as new bike rack. I have an Astra Sxi coupe and a Beta bike which seems ok on back of car but the bike seems to move somewhat to me ie flexing of the rack i guess. Is this ok i dont believe it will hit the car but i feel uncomfortble with the moving and find myself looking in the rear view mirror with dread.

i was just the same when i first used a rack but you will get use to it and your confidence will improve the more you use it,

just make sure you strap the bike on well and forget about it,

i always put a strap across the middle of the bike and down to the rack, another strap around the back wheel and upright, and a strap from the handelbars down to the rack near the front wheel never had the bike touch the car and always in the same position when i get to the trial

I fix a strap to attach to the handlebars and then attach it to the rear seat belt bolt.

This stops a lot of the excessive swaying.

I felt un easy when i 1st started transporting my bike with a rack, it felt like my heart was in my mouth, and when i went over a bumb, i would stop breathing.. Until it stoppped swaying. I have a ratchet strap going over and around the rear wheel, and a strap on the inside of the handle bars , slightly compressing the front suspension... Just chill mate and you will be fine... and also the bike will be fine !!

Here's a product I found that takes all the "wobble" out of a hitch carrier. http://www.hitchrider.com/nowobble.htm

I can now drive around and not worry about my bike while it's in the carrier!