Just to clarify - the tires are Falken CT60 A/S - great reviews - installed yesterday. All suspension is fine, inspected at my last service. It only began after the tires were installed, immediately.
Prior to tire change, I drove it in a straight line, hand free. Ran true. Also drove same straight line, hand free after install. In both test drives, it drove straight and true at least a quarter mile. I'm thinking that eliminates alignment, but not positive as I'm not a mechanic.
Steering wheel does not 'wiggle' in only vibrates slightly at that speed, but noticable. In fact, Genie did not even notice it when she drove it home - well drove faster than 25 mph too. But I only drove it later in the day, and noticed it because I was looking for anything unusual at varied speeds.
It's very minor, but I'm afraid it might increase over time, and then be out of warranty. I will call Monday and have a chat - make appointment to have them take a look. I'm just asking you tire knowledgeable guys for a little insight before I have that chat ...