Add an Option to Add More Pairs of Wheels to Vehicles

I’m planning on uploading a dumptruck model to the workshop (haven’t yet because I’m too lazy right now) that has 6 wheels, but right now you can only have up to 4 wheels on a vehicle. It would be nice if you could add more pairs of wheels to vehicles, up to 3 extra pairs (10 wheels total), so you can make vehicles with more wheels more accurately.