A cruiser bike is a bike that gives an upright riding postion, is usually blinged out, and is ridden rather sedately.
A dirt bike is something like a cross between a BMX and a MTB. Usually a singlespeed, suspension fork and rugged frame to stand up to jumps and tricks. MTBs are available in several different versions(XC, AM, DH), but basically they're about providing a compromise between ruggedness and rideability.
The biggest difference between a chopper bike and a cruiser style bike is that with a cruiser you are leaning forward, lying on the bike as it were, with a chopper style bike you are sitting upright and the handles are higher up.
A normal bike is different that a cruiser bike in many ways. A cruiser is not meant to be ridden long distances and is mostly meant for having an easy ride. A road bike is meant to go long distances and is therefore lighter.
A road bike offers a more preformance-oriented, streamlined hunched over riding position and bike design, while a cruiser bike has the rider more upright and is more set up for comfort than speed.
I have no idea what you mean by "gear bike", so the question can't be answered.
The difference is that the mountain bike tube is much burlier and wider than the dirt jump tube but may not be as strong in terms of hard hitting strength.
Mountain bike helmets are better than dirt bike helmets
A cruiser bike is a bike that gives an upright riding postion, is usually blinged out, and is ridden rather sedately. MTBs are available in several different versions(XC, AM, DH), but basically they're about providing a compromise between ruggedness and rideability. Mountain bikes have much knobblier tires and usually have suspension, which is rarely available on cruisers. Mountain bikes are also used competitively.
The main difference in speed between a mountain bike and a road bike is that road bikes are generally faster due to their lighter weight, smoother tires, and more aerodynamic design. Mountain bikes are designed for off-road terrain and have features like suspension and wider tires, which can slow them down on paved roads.
The recommended psi for beach cruiser bike tires is typically between 30-40 psi.
A mountain bike is designed for off-road trails with features like suspension and knobby tires, while a road bike is built for smooth pavement with a lightweight frame and narrow tires for speed.
In 1979 the first official mountain bike was launched. Tom Ritchey of Redwood city, California started building fat-tire frames. The Lawwill Pro Cruiser was the first mountain bike which was sold for $500 overseas.
A road bike is designed for smooth, paved surfaces and is lightweight with narrow tires for speed. A mountain bike is built for rough terrain with wider tires, suspension, and a sturdy frame for off-road riding.