Help with rear tyre!!!

[Tyssen]

Had this changed about a month ago cos It kept going flat after 1 or 2 months so thought I had a slow puncture, non of the others needed blowing up like that one.

Anyway got a new one and its going flat again, definately needs air, its the rear passenger, would there be any reason for this?

 

[Ali]

Was the value replaced? Bent rim perhaps?

 

[Kele.B]

Wot condition r ur wheels in? Mine were wrecked by previous owner and my new lower profile tyres I had kept goin flat because something to do with the beading and wouldn't hold the air!