i have recently bought a set of refurbished o.z. racing 3 piece wheels for my e30 m3. They are 8.5x17 front and 10x17 rear, wearing 215/40/17 and 245/35/17 respectivley. does anyone have any ideas on tyre pressures? It seems to me that with such a low profile tyre a higher pressure should be used in order to protect the rim, but i'm not sure. Any ideas? Thanks in advance for any help. Darren. 88m3