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Yes,
From your picture it is clear that they sell aluminum wheels. I do believe they also sell different style plastic ones too.
My view on aluminum wheels is this, on any and all RC cars, the addition of aluminum wheels is unsprung weight. Unsprung weight is the WORST!! It should be limitted as much as possible.
On 1/10 scale touring cars, aluminum wheels are prone to bending, slow the car down, and increase the tendencies for the car to push.
On 1/18 scale HPI Micro RS4s, aluminum wheels are not such a bad idea because they are one piece replacing many plastic parts that make up the stock wheels.
On 1/24 scale ABC hobbies cars, the wheel hubs are already made of aluminum. On the DTM X-4 the car has 4 hubs where as the DTM-SP does not. This fact alone does slow down the X-4 and hurts steering.
On 1/26 scale Mini-Zs I have aluminum wheels. At the time, this was the only way to get a wider flat tire on all 4 corners of a mini-z. I am sure they decrease the speed of the car.
I do have 1/5 scale bike that has billet aluminum wheels. I know this does slow the bike down considerably BUT this was a compromise the designers of the bike made. BECAUSE the added weight of the wheels is what keeps the motorcycle from falling over: they are like gyroscopes.
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