Thought I'd share my problem.  I got a set of 4 Kumhos from a reputable tyre shop on Sunday morning and had them fitted/balanced, etc.  Drove home and left the car in the driveway, and it has stayed there since.  Tonight (Mon) I went out to walk the dogs and came home, passing my car in the process.  Two tyres are flat!  Could be faulty valves, as it's happened before on a brand new tyre when I got home, but on two it seems a big surprise.

I called the the tyre place and they told me to bring it in, so I have tried to get my first flat wheel off to put a spare on, but I can't get the tyre iron in the holes!  Previously it went in when I changed it to go to the tyre place!  Now it doesn't fit???  The holes seem circular and not distorted.  Doesn't make sense.  The tyre iron will go into the holes of the three other wheels, just not this one, any of the holes.  I've tried using a socket from my tool kit but it feels like I'm gonna break my wrench if I keep trying.  Have used some spray to try and loosen it.

So I'm hoping the tyre place can send someone out to help, or at least use a portable compressor to get some air into them so I can drive it over.  Or maybe I'll just have to limp to the servo to do it.  Will it be okay if I go reeeeal slow, you think?

Any thoughts?