no wheel weights
 

I got a fresh set of Sumoto tires for the front of my 2010 nismoZ ,I had them road force balanced ,but for some reason there were no weights added.
I saw the tech bring them back to get them done.
I notice the old ones taken off ,but no new ones. I drove the car at a high speed on the turnpike and it was solid ,not a single vibration.
Are these wheels extra balanced at the factory to be so refined? (not that I am complaining Lol)

As long there is no shimmy/vibration you are good to go. Not too often, but occasionally you get lucky and wheels/tires combo won't need extra wheel weights to balance it correctly.

Sumoto.?Is it Sumitomo.?

While, as per fryzia23, it's possible to get a wheel/tire combo that doesn't need any weights, the odds are slim and getting two of them is pretty much impossible. I'd be willing to bet 0.05 USD that there are weights on there, you just haven't found them.

I have had this happen several time with the factory Nismo wheels. It just shows the quality of the wheel.

Are your sure there aren't some stick-on weights or weights on the inside of the wheels?

your right lol! I spelled it wrong.:icon14:

No none, i saw where the old ones were removed, but none added.

it is possible because it is done by moving/rotating the tires to compensate the imbalance between the wheels and the tires.