I could write a book at this place, but I'm gonna make it somewhat short:
I would pass on spacers generally. I'm aware Porsche used to use spacers
on some applications from factory. That said spacers affect geometry and
load on the bushings, not on the bearings only. Current Porsches (991/992
in particular) use complex multi-link rear suspensions. These cars are ****
fast. Guess you'd likely want spacers sitting on the front also. These WILL
affect steering geometry and straightline stability. Don't let fool you by the
majority of people who don't know how a well set-up Porsche feels. Some
wouldn't even notice the differences (even though you and I might have a
hard time why they don't). IF you actually still need advice ask experienced
dudes on Porsche forums.
I thought Porsche and winter were words never used together. Get a Subaru
with AWD for winter and Porsche for summer.
Suba...what? Plenty of choice within the Porsche-owned VAG family including
Porsche's own Macan. Does he even need AWD?
.