It's works the same no matter where the weight comes from.
Incorrect. Rotating weight has a greater effect. And the farther the weight from the axis, the greater the effect.
Seems real interesting most race teams try to remove body and chassis weight rather than lighter wheels and tires.
If I was going to spend a pocket full of cash to make my street car faster it wouldn't be spent on wheels and tires which wouldn't produce near as much performance as some engine or trans upgrades for the same bucks.
