My local dealer (in Montreal Quebec) insists that the only tires they will install on my 2011 K1300GT are the either of the two "approved" tires by BMW... the Bridgestone BT-020 or Metzeler Z6. I was going to buy Michelin PR2's but he told me I would void the warranty by using those tires.
(This may or may not be legal in Quebec as our legal system here is not the same as anywhere else in North America.)
The only document I was able to find (on the German site) lists only those two tires. Is there any documentation anywhere (official) that recognizes other high-end tires as being acceptable?
The tire manufacturers (Michelin, Dunlop, and even Bridgestone and Metzeler) all have tires THEY say are suitable for my bike and I'd like to choose from among them. But I'm afraid to affect my warranty. My dealer said that in some very rare cases, they HAVE installed other tires, but only if the client signs a full release.