I'm making a custom 2WD tractor that looks like one we actually have, and while there are all types of cool drive wheels are avavailable, I'm having a really hard time finding a skinny narrow wheel (with or without aggressive tread) for the front wheels....

Does anyone know of something that would fit? Either some type of RC motorcycle or airplane or even trailer type wheel...? Anything that would fit (or could be made to fit) a Traxxas axle.

Thanks!