I run my non-RFTs about +3 or +4 psi above the recommended pressures. Although, the 2006 manual has very low recommended pressures (29/32) for my car. I think BMW revised their recommendation up in subsequent years as the later e90 owners manuals have higher recommended pressures (somewhere in the 32-35 range).
Also, keep an eye on pressures as the temps go down. You get about 1psi change per 10F temp fluctuation (up or down respectively).
If you post more details about the nature of the wear, we can help you better.