So I'm working on one of my major projects this semester, a dirt bike design, and I'm trying to find a solution for the wheels. For our car models we'll generally use large RC car wheels, but these are far too wide for a dirt bike. I need something with a rim diameter of about 5", overall diameter with tire ballparking 5.5".

Anyone have any ideas? The rest of the model will be comprised of foam, MDF, Renshape and styrene, along with whatever kitbashing I can come up with for the details.

Find some kick ass pram wheels, ones with wire centres.

Didn't think of that! Thanks mate.

Pram wheels could work.

You said you tried RC Wheels but they were too wide. Could you not just cut the RC wheel in half (Talking about the width ofcourse) and then just plastic weld both halves together?

Rc wheels are like 2 inches though? Id say go for older pram wheels, they're thinner also along with wires, would be pretty cool imo. Cheap too, go to a car boot sale (or whatever you call it there) or a charity shop or something.

Oh yeah, my bad. Just noticed the Rim Diameter needed.

something like this

http://reclaimedhome.com/wp-content/uploads/2008/04/pram.jpg

spray the rubber black though and would be perfecto