Tyre pressures for larger diameter wheels

[SonicShadow]

Easy PH,

Does anyone have a link to a proper source that goes over the correct way to calculate suitable pressures for a non standard wheel? From my limited knowledge, I would think the volume of the tyre and it's load rating will change the required pressure?

[SonicShadow]

Thanks Red.

Trying to work out what the best pressures will be for my MR2 with 17inch wheels, and of the people I've asked so far, everyone seems to be running different pressures. Looking for a more scientific way to get a good base point rather than 'it feels alright'!

Will have a read through those links above.