Byronic
Guest
I guess they could also be using the steel brading/bands inside the tyres. One thing I am certain of, is that the tread on my tyres are great insulators - at least at 1000volt and at whatever miniscule current it uses.
As you say great insulators at weak levels. Thats why the steel braids aren't used to the best of my knowledge, and needs the rubber as protection. Taking steel out to the rim or to the road ie away from the protection of the rubber would present a few probs. corrosion for eg.