Impossible to install all five bikes properly, difficult to use for off-sized tubes, my husband and I are usually not challenged by this type of thing but it took us HOURS to get our bikes on the car and we had to pad heavily as the bikes definitely rub together a lot.  In the end.  We used it once and have not been willing to bother with it again in about a years time.  It's a real shame too because we really like to ride but now that our kids are using bigger bikes, we just can't fit them into the car.  We need a good 5 bike rack but THIS IS NOT IT!