Will a front tire and rim on TTS be a good spare option temporarily for the rear if you get a flat that is not repairable with the goop stuff.......thinking of keeping a spare front tire in the car on long trips since it should fit over any of the brake calipers....offset is 51/ front/56 rear and should not be a problem? Right?

 

I believe you are right. Porsche sells a spare wheel/time combo. If you get a flat on a rear tire you are supposed to move one of the front wheels to the back and then put the spare on the front. Last time I checked prices on the Porsche OEM option it was outrageously expensive.