Originally Posted by DoktorB
That'd be the way I'd got with OEM wheels, and tyres supplied from the factor.
I'd always check the tyre rating first, and my current ones show max pressure to be 50 PSI, so Im well within range.
Id assume lower profile tyres are less likely to suffer from extreme cases of the image below. The side walls on my Ultrac Sessanta's are very square, opposed to say a high walled 16" tyre that would be on the Turbine alloys of an E39 (Style 33s)