[pothole]

The heaviest, tartiest, nastiest 911s get more kit year after year, and do indeed get ever heavier.

But despite your ever more nuanced efforts, the fact is that the core Carrera 2 model has barely gotten heavier since 1989. Sure, add a glass roof, double-clutch box, blah blah blah, it's going to add up. Honestly, I could care less what the chestwig chariot versions weigh, so long as the core Carreras aren't getting fat. Which they demonstrably are not.

But any remotely sane analysis of the new 991 would conclude two things re the weight:

1. It's not the 991's problem
2. Porsche has done a pretty spectacular job keeping the weight down

Try comparing the weight of a basic E30 3 Series to the latest F30. The latter is over 500lb heavier. Now that is weight gain.