Thanks for the empirical evidence C. I'm glad you didn't suffer any wheel damage.

All I heard was _speculation_ that you could probably feel a flat/low pressure with 19s before damage would be done (i.e. TPMS wasn't "needed").

I seem to remember 997 cars were suppossed to come with TPMS at introduction but it was delayed. Sounds like Porsche "knew" how essential TPMS would be.