Well, I used these wheels on my cruiser skateboard. Note, I didn't do tricks with these wheels; however, I did do a lot of cruising on sidewalks and roads (smooth and cracked pavement). I notice that these wheels make cracked and rough roads smoother; you don't feel the cracks and bumps as much. If you used a regular wheel, you feel everything (cracks, bumps, etc.). Since you don't feel as much vibrations and bumps, you can skate more because you are less tired.
On a different matter, let's talk about the grooves on the wheels. When it comes to pebbles and sticks, these wheels will kick it out of your way. Thus, you become confident skating through pebbles and sticks. But, let's be realistic here; the bigger the skark wheel (70 MM or my 72MM), the more likely it can handle bigger pebbles. These wheels are not likely to handle rocks shaped the size of a quarter; note, they might be able to handle it but I don't want to test it. Through puddles and wet pavement, these are great; you have more control of your board.
For me, I recommend 70MM or my 72MM shark wheels for longboards and not on a cruiser board. Don't get me wrong. You can still put these on cruiser board, but your board is going to need risers to prevent wheel bite. However, at that point, your board is a little too high off the ground and you have to use more energy to push. For cruisers, I think a 60MM shark wheel will be good; I just bought mine . Thanks for your time.
The width is increased, but the friction is decreased! The sine wave design provides three lips per wheel for superior lateral grip. When you want to slide, they break away smoothly and recover easily.
The wave pattern design allows for a thin contact patch touching the ground and therefore less friction, resulting in a quicker ride.
The alternating pattern of grooves significantly reduces hydroplaning by channeling liquid, sand or gravel out and away from the surface of the wheel, allowing for a firm contact patch with the ground.