One of the most important part of a skateboard is the skateboard wheels.  As with all parts of your skateboard, appearance is a big factor.  You need to make sure your wheels look good with the rest of the skateboard.  The other 2 factors are the hardness of the wheel and the diameter of the wheel.  Larger wheels allow you to go faster.  If you are doing a lot of skateboarding on ramps, you will want a larger wheel to get more speed so you can get more air.  If you are going to be doing more tricks on the ground, you will probably want smaller wheels because they will be lighter and allow you to flip your skateboard easier.  If you are going to do a lot of all terrain type skating, you may want to choose a softer wheel to give you a smoother ride.  As with all of the elements of a complete skateboard, many skaters will be well served by getting a medium sized wheel of average hardness.

 Pig makes some of the best street wheels. They also have some of the coolest wheels! And they also have have a really cool name!

 Bone also makes some of the best skateboarding wheels. They have differen't wheels for street and park skateboarding. They also have some of the strongest wheels too.

 Kryptonic has been making skateboard wheel since 1965. They have cool desgins and last a long time. They also have really good grip for good control!

 Spitfire wheels has some of the coolest skateboard wheels. They are also some of the wheels on the market. Spitfire's skate team has some of the best pros like Eric Koston, Daewon Song, Dustin Dollin, and Tony Trujillo.

 Since Element makes skateboards, they have to make wheels to go with them( just like all the other brands that make skateboards). Element has some cool looking wheels too. They are also good Quality wheels.