Ok mum's home, going off the placard inside the drivers door.
"The tyres fitted to this vehicle shall have a max load rating not less than 580kg or load index of 89 and a speed catagory not less than H (210km/h)"
Recommended inflation pressure:
front: 200 kPa, (29PSI)
rear 220kPa (32PSI)
previous tyres were higher than this so dunno why they collapsed.