So it looks like our infant seat will expire when our baby is about 3 months old. We were wondering if we should just use it to it's expiration and then switch to a Convertible seat (not our 1st choice for convenience though.) Then DH starts on the whole "it's not going be suddenly a whole lot less safe the day or so after it expires, right?" OK I am not comfortable taking a chance in that direction, but it got me thinking... since it is a gradual deterioration, is it really all that safe to use the seat in the last 3 months before it's expiration? Is it a bit less safe that it was when it was new? Should we just give it away while is still has a bit more life in it, and buy a new seat?