The wheel Flange.
If you are asking what holds the tire on the wheel it is called a bead on the tire. On the wheel it called the rim.
You will destroy the tire and harm the bead seating surface on the wheel.
Bead sealer is sticky and basically glues the tire to the rim. Tire bead lube is just a lubricant used during tire installation.
You could probably get the bead to seat, but it isn't ideal and would be more likely to break the bead when hitting potholes and such.
The tire bead which is a circle that is made of steel and the same diameter as the wheel that for the car on which it is made for when inflated the tire Is then up against the wheel that is called the wheel flange The tire bead which is a circle that is made of steel and the same diameter as the wheel that for the car on which it is made for when inflated the ire Is then stuck
main reason to use a tube is a bad bead (the seal between the tire & the wheel)
It's a wheel/tire dimension. 700 being roughly the outside diameter of the wheel with the tire mounted, and 23 being the approximate width/height of the tire when inflated, both measurements in millimeter. A tire with that marking will fit a rim with a Bead Seat diameter of 622 mm, and often also referred to as a 28" wheel.
If you have to overinflate the tire to seat the bead on the wheel rim, there is a chance of the tire exploding and causing injury or death. Use a lubricant to help seat the tire bead (like WD40 or soapy water). If you are changing a tyre on the roadside, because of a flat, you need to consider passing traffic and avoiding being struck.
Tire Changing The rim of the alloy wheel is aluminum and the exterior appearance can easily be damaged. Special care must be taken with the tire irons when changing a tire to avoid scratches and gouges to the outer rim surface. Insert scraps of leather between the tire iron and the rim to protect the rim from gouges. Honda offers rim protectors (part number 07772-0020200) for this purpose that are very handy to use. All models are factory equipped with tubeless tires and wheels designed specifically for use with tubeless tires. Warning: Do not install tubeless tires on wheels designed for use only with tube type tires. Personal injury and tire failure may result from tire deflation while riding. Wheels for use with tubeless tires are so marked. REMOVAL: 1. Remove valve core to deflate the tire. 2. Press the entire bead on both sides of the tire into the center of the rim. Lubricate the beads with soapy water. 3. Insert the tire iron under the bead next to the valve. Force the bead on the opposite side of the tire into the center of the rim and pry the bead over the rim with the tire iron. 4. Insert a second tire next to the first to hold the bead over the rim. Then work around the tire with the first tire iron, prying the bead over the rim. 5. Stand the tire upright. Insert the tire iron between the second bead and the side of the rim that the first bead was pryed over. Force the bead on the opposite side from the tire iron into the center of the rim. Pry the second bead off the rim, working around as with the first. 6. Honda recommends that the tire valve stem be replaced whenever the tire is removed from the wheel.
Air pressure against the Bead keeps the tire from slipping on the wheel. Traction keeps it from slipping on a surface.
Tire mounting lubricant.
No. A 700 C rim has a bead seat diameter of 622 mm, while a 27" rim has a bead seat diameter of 630 mm. If you use excessive force it might be possible to mount the tire, but it won't sit well. On www.sheldonbrown.com there's a nice section about tire sizes.