On 27/01/2016 16:54, The Natural Philosopher wrote:

When I started pumping it up it was WAY flatter than it is now, and its
been in my drive since then.

That probably does away with the theory that it's a different car.


Must go and check all the tyre pressures

And the hole where we could feel the air ****ing out was nowhere near
the rim, it was the edge of the flat part of the tread

If there's a screw or nail in the tread, it may be sealing the hole. For
now. Temperature would make a difference to the sealing, and the tyre
might have got hot if it was driven whilst nearly flat.

The good news is that some holes in the tread, but not the side wall,
can be repaired for not a great deal. £10-ish. It would be best to
remove the wheel and get the tyre repaired, rather than driving on it
any more and buggering it up properly.