Have you thought about selling your wife and her bikes to make more room for you and your bikes? Just throwing that idea out there for your consideration.

In these cases I always apply the Ride-Wife-Conjecture (scientifically proven, of course), which states the following:

In cases when the bike herd must be thinned, the determining factor of whether or not to keep a member is based entirely on comparison to the usage of the wife. So if a member gets ridden as much or more than the wife is ridden, the herd member stays. If the member is ridden less than the wife is ridden, the member must find a new herd.