Hello, I’m new here at the Yamaha Forum since I bought a Tracer 9 GT from 2021 3 weeks ago. Since 1994 I drive a motorcycle and have never changed a brake line. I have now read somewhere that Yamaha requires an exchange after already 4 years??? My first machine was a Honda CB 500, with which I drove for 14 years, about 55 TKm) and have done all the maintenance work after the warranty period itself. I have the brake fluid regularly every 3 years. The Honda also had rubber brake hoses, while the BMW was made of steel flexible cables. In the car, brake hoses are only replaced if these first porous spots on the outer skin (usually after more than 10 years). The TÜV examiner sees this the same way. Is this a (over) careful ) measure of Yamaha, as is the case with so many manufacturers today? How do you handle it?