Still having tire problems

[Johnny Danger]

Are you using the oem wheels ?

[Topless]

By process of elimination, it was not the tires. "A morning vibration" very difficult to diagnose over the net. Get your car in to a qualified local Porsche mechanic and have him drive the car 1st thing am to replicate the symptoms. An experienced shop will make your car right in no time.

[WhipE350]

This might sound silly but to eliminate tire flat spotting as the possible issue put the car on jacks overnight (say a Friday night) drop it sat morning and take it for a drive.