Don't get rid of GT4. You will regret it. You have the x5 for kids, trips, hauling stuff. If you didn't have a people mover I might say different.
The only thing a 2 Porsche owner should be thinking about is a third Porche. ;)
I have driven both a GT4 and a GT3. Have ridden in the new GT4...
The internal card fills up pretty quick and then it makes you choose what to delete. I tracked 40 days this season so that is a LOT of video and data
the catalyst has a slot for an addition memory card. 256 is the max
i run samsung 256 evo micro sd cards in garmin, go pros, etc.
I can do 137. was running 2:02 and 2:04s That is on OEM struts. Season or 2 behind, but going full MCS this winter, that and then be able to fit 295 sq i will go below 2 next season
Anyone in VA want more track time let me know. Our Drivers Club at Dominion Raceway always welcomes guests and we run into Dec as long as temps hold.
Also forgive the intrusion... was bored and "my" forum owner apparently has links to a bunch of others and I was slipping around looking for...