[quote="DickieG"]Hasn't been the need for it as all the wheels have centre hole plus there'd be the problem of cost and concern over the issue of wear to the inside carcass of the tyre over the life of the tyre. Fitting it to aircraft tyres is one thing as they do little more than 10-20 miles a day on the ground, whereas the average Police car does something like 300 miles per day. Looks like a very expensive solution to resolve a stupid design.[/quote]
That was one of my initial concerns, if the compounds were abrasive, but according to the blurb of several manufacturers, the compounds are not abrasive and only in motion when the wheel starts to move and are 'held' in place by the centrifugal forces acting on them. As the tyre wears progressively and the balance factor can change, the wheel will need to be rebalanced at points throughout the tyre's life, usually when out-of-balance effects can be felt in car., when using conventional wheel weights.
I see your point about the aircraft wheels, but many truck companies use these compounds and they must knock your paltry 300 miles for the Pandas into a cocked hat!
The more I think about this, the more convinced I am about the benefits and I'll put the thoughts into practice next week.
Handyman