It helps shes into cars too..
but there is plenty of space in the basement to keep them out of the way. Its not like I use them as a couch
If it does make a mess during transport(doesnt usually happen) its nothing a vacuum cant handle. I find winter floor mats have the potential to track in more dirt.
There are ways to keep the tires too. In those big plastic bags or a tire tote. Id go for a nice tire rack in the garage but its tight enough as it is so even off the ground it wouldnt leave much space/headroom would be compromised.