Rubber mainly, but also some sort of cloth for reinforcement. They will also have a reinforced edge, where they sit at the rim. This bead as it's called can either be reinforced with steel wire, or a high-tensile textile, usually Kevlar. Tires with Kevlar beads are usually referred to as "foldable" and are lighter and usually more expensive.
rubber
Silk
There are plenty of materials that can be used for bike production. Usually the frame/fork is steel or aluminum, with steel also used for spokes, sprockets, chain and axles. handlebars and seat posts are usually aluminium. Saddles are a mix of metal rails, plastic pan and plastic/rubber padding. Tires, tubes and grips are rubber.
First it was steel, then chromoly, then alloy, then carbon, and now even timber.
They are made of a very hard type of rubber which holds air inside it so that the bike can ride on a hard surface.
Mainly rubber, with a synthetic cloth added as reinforcement. There's another reinforcement in the bead, either a steel wire, or a string of strong synthetic fibre.
rubber
mountain bikes have thicker and larger tires. They usually have more heavy duty springs.
no to mountain bikes and trick bikes but yes to the ones called "street bikes" with flat edged tires
For better traction. Street bikes are made to ride on concrete and tarmac. Pretty much the same terrain everywhere. Mountain bikes are made to ride on dirt, mud, gravel, sticks, rocks, grass - and to get traction on those types of surfaces you need a wider, knobblier tire.
There are a few good mountain bikes tires that would suit a 18 speed bike. I would go to a bike store and ask.there's different tires for what type of riding you doing but everyone have their own way they like their bikes from handle bars to tires. There's no best part. It's just what's good for you
Rubber, fabric and steel, just like car tires.
You could check at a local bike store. There are BMX bikes, mountain bikes, road bikes. The main differences are the types of tires, suspension, and brakes.
Honda
Basically the same as road bikes, but with thicker tubes and bigger welds.
Most mountain bikes are made from Aluminum, some are made from carbon fiber and older bikes are made from steel. Quality, weight and strength vary hugely by manufacturer with most high end bikes claiming unique methods which either reduce weight, improve strength or both.
A mountain bike is basically a bike meant to be strong enough to be ridden off road. It's overall stronger and has wider tires than other bikes.
Yeti bikes are sturdy bikes that are manufactured for mountain riding. They are made with stronger parts and brakes that can withstand the rugged terrain.
There are several companies that manufacture mud tyres. Two of those companies are Schwalbe and Michelin. Mud tyres are made for mountain bikes and there are many selections to choose from.