Rendering Car Tyres

[Caticuta]

Hi guys,

I've bought a vehicle model which I'm hoping to render but I'm struggling to do the tyres because the tracks haven't been modeled, it's basically just a solid black tyre.

Any tips for this? It's not possible to edit the model as it's not in a format we use.

Also if you do render vehicles could you PM me as may have a couple jobs (paid).

Thanks