[terboboost]

Rotational inertia is not the primary reason for lighter weight wheel/tire...the primary benefit is less unsprung weight. Less unsprung weight allows the suspension to work more efficiently and effectively.

But as this article attempts to show, but does a poor job at, is that wheel weight really doesn't matter for 99.9% of applications. You aren't going to feel it in unsprung mass, and you certainly aren't going to feel it in inertial effects. This does not hold true if you start comparing extremes. A 20 lbs monoblock compared to a 35lb 3piece wheel will be noticeable...but I'd bet at least 50% of this forum still couldn't tell the difference! These 1, 2 lbs weight differences only matter if you are in the upper echelon of racing.

What does actually matter, and what many people can feel, is what this test and most others seem to disregard. Wheel rigidity and impact strength. Wheels bend and twist quite a bit, especially on track, and this can be felt through the steering wheel. Lower quality wheels, tend to have less overall strength, impact, tensile, and compressive, AND they tend to be less plastic in deformation...aka you're wheel will crack catastrophically instead of bend. And to make matters more complex, material properties are only half the equation, the other half is design characteristics, and the devil is in the details there.

Wait until most of you figure out the term "forged" or "made in china" doesn't mean a god damn thing to the wheel's quality, and can even indicate the opposite of what you might think.