Difference between 2wheeler and 4 Wheeler

Cars have two things going for them that motos do not have:

1) inherent stability (they don't tip over)
2) More traction and lateral stability - the tire contact patches are wider and there's 4 of them.

That said, braking distance is usually more an issue of rider skill than actual capability of the system. On an older (or cheaper) ride, drum brakes or single (rather than dual) front disks may be used, which of course limits the amount of braking force that can be applied. Performance bikes are usually equipped with discs front and rear, with two on the front. They can stop VERY quickly if the maneuver is performed correctly. Cruisers usually go with a single disc up front, as the added rake/trail makes the front wheel prone to 'bouncing' if braked too hard. The advent of ABS and linked brakes on bikes further improves braking (with less risk of slideouts or other mishaps) but one still has to know how to brake safely.

Because cars do not have to worry about 'braking weight transfer', they can be braked front and rear (and both sides) from one system, using a proportioning valve setup to bias the braking force where it is needed. Bikes, however, need two brakes, front and rear - the front is progressively applied as weight transfer frontward makes it more effective, while the rear is 'feathered' as weight transfer frontward makes it less effective. When skillfully applied, using both brakes dramatically reduces braking distance.


If by 4-wheelers you mean quad atvs, then the differences are significant. The first is skill. To ride a motorcycle requires the acquisition of a certain level of skill, which can be obtained by some combination of training and practice. The same is not true of quads, which can be operated by any chimp with an opposable thumb.

The second difference is safety. Motorcycle riding entails a certain degree of risk. The skilled rider recognizes that risk and manages it by wearing good safety gear, getting training, and developing riding habits that maximize his odds of avoiding injury. Quads are inherently unsafe: they can tip over and hurt you. The typical quad-riding chimp maximizes the chance of injury by riding around with a steadily declining 12-pack in the cooler strapped to his rack. In addition, he churns up mud holes, burns a double rut into single track trail where he does not even belong, lobbies to keep motorbikes out of his designated chimp playground, while at the same time forcing the closing of riding areas by his chimpish behavior, thereby increasing his exposure to injury as a target for a thrashing, or at least a good chimp spanking.