I thought this was info worthy of spreading. Swann Insurance are offering wheel and tyre insurance. A customer in last week mentioned he'd taken out this policy in addition to his normal comprehensive insurance (seperate policy) after he mentioned he had a slow leak in his rear tyre which turned out to be a nail at a very shallow angle and not really repairable.
He now has a new tyre due to this policy, the cost of which (for 3 years) was a bit less than the cost of the replacement tyre. And it also includes rim damage.
So well worth looking into I thought.