Finding tires with that size stamped on them might be tough.
Your 3.00 is a 90/90, the 4.10 is a 110/90. You can find older looking tires in these sizes. I shop ebay, put the size tire I want in the search and then arrange cheapest to most expencize with S&H included.
Select just new tires, look at them and find the best deal.
On the tubeless thing. when tires started tires weren't designed to hold air, the tube did that. The tire was just for tread and carry the load.
When they figured out how to make tire hold air they started to mark them as tubless, so they could be run on cars steel wheels without tubes.
Motor cycle tires have the same history. But most bikes ran tube tires longer than cars. Now days all tires are made the same. You can run a tube inside a tire if you mount it on a spoked wheel or tubeless on a mag wheel.
The tire maker doesn't know if your bike has mags or spokes, so he makes them suitable for both to prevent lawsuits.
Leo
