Hello together, need new tires for my GPZ u. have come across the Bridgestone BT 45. I have been told by various forum colleagues that the tires are very good and can be mounted without any concern on the standard rims. On the side Bridgestone exists a release for the GPZ 600 R. OBWOHL the size of the BT 45 is NOT entered in the vehicle license. As size is 110 or 130 registered, the BT 45 are 120 or 150 large. Because that has not left me alone, I have un under the FAQ ́s the explanations read under the approvals. There it says that released tyres of other manufacturers can be mounted without hesitation, if the size corresponds with the entries in the vehicle certificate. Then sent an e-mail and a copy of the vehicle certificate to Motorradreifendirekt.de and today received the message that I must stay with the original size and the BT 45 is NOT allowed to mount. It is a pity that the n I would have liked to have mounted the tyres, but that confirms what I suspected! At least for MY GPZ that is so, do not know what is registered with others. So you must not blindly rely on the release…