First of all, there are a LOT of counter-intuitive realities in skateboard part design, and you just mentioned a BIG one. It’s kind of funny, but some of the WORST ideas in skateboarding come from really smart AUTOMOBILE engineers. I think this because they don’t differentiate from the lean-steer skateboard and the manual-steering cars, go-karts, and reverse trikes. They also tend not to understand that a gravity or push vehicle is grossly underpowered compared to a vehicle that weighs way more than the rider and has an awesome amount of power available to him, as well as a suspension system and the ability to countersteer. BMW Carver anyone? Rubber radiused tires, huge metal cores with swing arm type steering on a heavy metal brick of a deck? No thanks … no ultimate driving machine there.
Rubber and/or pneumatic tires can provide a tremendous amount of traction and control (Psychotiller’s Six Shooters and Carve Board tires come to mind) but if you don’t have a motor, you better have a chair lift and a steep hill around because they ain’t no fun to push. At least the Carve Boards are like that. Only tried Six Shooters under power and me likey.
On (dry) pavement the urethane wheel can be magically fast and smooth and you can dial in the amount of traction and/or drift that you want. You can make fast wheels that stick like suction cups, and fast wheels that you can push sideways, but in either case you won’t get greater “rolling resistance” with a wide wheel and/or wide contact patch. Just the opposite. Think of it this way. You’re driving your car on grass, sand, and dirt roads. Do you take the “road bike” path and use tall, narrow, highly inflated tires on tall stiff rims to “minimize rolling resistance”? Oh hell no. That’s about the worst thing that you could do. You want soft, wide, underinflated tires that keep you from sinking into the medium. Skaters should treat the board like a dune buggy in that regard. From a dead stop, my board with SIX 83mm tall ultra-soft high rebound 74a Centrax that are 78mm wide each will out-roll a board with FOUR smaller wheels of the same urethane. As I said before - counter-intuitive. 99.9% of skaters don’t know this, nor do they want to accept this. They will quote books and say things such as, “the smaller wheels will overcome the moment of inertia more readily and accelerate more quickly”. And they would be dead wrong.
In the mid seventies we started adapting roller skate wheels into skateboard wheels. Narrow 52mm medium durometer wheels. They only had to be narrow for roller-skating because of the size of the human foot. Too wide and they’d rub. Skaters begrudgingly increased the height and width and softness and rebound of the wheels until it was clearly demonstrated to be a winning combo. On super smooth ramps and concrete, you want a harder smaller wheel in the same way that you want the balls in your bearings to be steel and not rubber. You give up on traction but then again, you don’t need a lot of traction to land a trick or grind coping. That’s a different medium altogether.
Given gobs of high rebound urethane on a steep asphalt road and you can roll at over 85mph without a motor and start thinking more about better aerodynamics to go even faster. There are good reasons that no one is using a narrow inline wheel on a skateboard, even for going straight. They suck. If you like speed, traction, and control, go big, wide, soft, and high rebound.