Tesco Insurance said they would have rejected any claim if I hadn't told them that I was swapping to non-runflats, reason being that they consider going from runflat to non-runflat a change in the standard vehicle specification.
And by the way, changing to a larger size of tyre (of any type) would have been classed as a performance enhancement and the policy would have gone up
Also, this thread is gold - it just goes to show, take NOTHING for granted with your insurance company:
http://www.mini2.com/forum/finance-i...ml#post3285038
Maybe all insurance companies have different opinions, but to be on the safe side, tell them and ask for acceptance in writing
