RPF1 center cap weight

[Yarflana]

See here to ensure you know what I am referring to:
http://store.enkei.com/product/enkei-rpf1-cap

Does anyone know the weight of a cap? They are aluminum so they cannot add that much more weight, but I am curious because since the point of buying the RPF1s, at 13.7 pounds for 16x7s, is obviously to reduce weight. If they are more than 1/2 pound a piece, I will not plan to get them.

However, my only question is whether for acceleration, they shouldn't affect things much since they are not adding weight to the outer diameter of the wheel, but only at the center, so they are more of a static weight, vs. a kinetic weight (I know there are better terms for this, but I think you racing folks know what I mean).

Thoughts?

Thanks,
Pat

[NJ Drive]

Center cap weight is insignificant(an ounce or two at best), especially residing at the center of the wheel. If you're going to be anal about moment of inertia, concentrate on lowering tire weight and reducing its overall diameter since it will have the most dramatic effect.

[Yarflana]

Hey thanks a lot...exactly what I wanted to know. Take care,
Pat

[Klink10]

I have 4 of them and they weigh almost nothing. So much so that if you drop one it will dent.