I have a '96 Toyota Sprinter Carib 4WD 1.8 (Japanese Import - basically a Toyota Corolla estate).

It would have originally run 185/65r14 tyres at 30PSI on 14 inch wheels (as per the sticker in the door). One of its previous owners swapped these for 15 inch alloys running low profile tyres - 195/55r15. This is a diameter difference of +0.1 inch, so nothing too drastic.

What pressure should I be inflating these tyres to? Still 30PSI, or should this be adjusted to take into account the different dimensions?

Cheers in advance.