I have found most hoses on all BMW's are very well made. I would change them when the water pump gets changed...75-120k. Or about 10 years but that's me.

BMW Parts and BMW Accessories | Bavarian Autosport This is a link to a complete cooling kit bav auto sells...there links seem never to work and go to their home page.

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2002 X5 4.4i Sport Wheels
2014 X5 35i M Appearance & suspension package
1995 Porsche 993
1972 Porsche 914-6
2020 GLE 450 Twin Turbo
2019 Alfa Stelvio 500hp Quadrifogilo
Many motorcycles