Starcade Wheels are a part of Rocket League’s New Season 10 Rocket Pass which released on 8th March 2023.
In addition to the basic variant, the wheels come in Black, Burnt Sienna, Cobalt, Crimson, Forest Green, Grey, Lime, Orange, Pink, Purple, Saffron, Sky Blue, and Titanium White.
Since Starcade Wheels are a part of Rocket Pass, the basic unpainted version is not tradeable as it falls below tier 70. All painted versions, i.e. versions above tier 70 (aka pro tiers) are tradeable. For latest trends on trading prices of these wheels click here.
Here is a short clip showcasing all the variants of Starcade Wheels.