Thanks for a very thorough review. These are the tires that I have been leaning towards, but your comments about the soft sidewalls and being twitchy at higher speeds has me nervous.
Do you think this is a real issue or are you just trying to be picky?
The proper way would be to remove the spoiler, remove all of the tape and residue from both surfaces, apply some 3M automotive bonding two sided tape or similar and reinstall the spoiler. It might be tricky to get it just right so I would have a body shop do it. Hopefully they wouldn't damage...
2014 CPO Mazda6 GT w/ 62k miles for $16.3K +TTL
Doesn't have adaptive cruise or regen braking.
Purchased from local Chevy dealer and they did not know it was Certified just a couple months ago.