![Why is my 2019' 440i making this driver side exhaust rattle noise upon cold starts? I have a cat-back Valvetronic exhaust kit. When I removed the driver side tip it doesn't rattle, Why is my 2019' 440i making this driver side exhaust rattle noise upon cold starts? I have a cat-back Valvetronic exhaust kit. When I removed the driver side tip it doesn't rattle,](https://external-preview.redd.it/xX4SkHtbpdjiq-3it3xye597v5jRHshsVtABM53B-T0.png?format=pjpg&auto=webp&s=ea4850adfa65480f7a1e3899027e125604d4d226)
Why is my 2019' 440i making this driver side exhaust rattle noise upon cold starts? I have a cat-back Valvetronic exhaust kit. When I removed the driver side tip it doesn't rattle,
![How To Clean And Protect Exhaust Tips – Touch Detailing – Bristol & South Gloucestershire | Mobile Car Valeting & Detailing How To Clean And Protect Exhaust Tips – Touch Detailing – Bristol & South Gloucestershire | Mobile Car Valeting & Detailing](https://touchdetailing.files.wordpress.com/2018/04/before-after-2-copy.jpg?w=805)
How To Clean And Protect Exhaust Tips – Touch Detailing – Bristol & South Gloucestershire | Mobile Car Valeting & Detailing
![UrbanX Silicone License Plate Frame For BMW M240i xDrive 2 Pack Car License Plate Cover, Universal US Car Black License Plate Bracket Holder. Rust-Proof, Rattle-Proof, Weather-Proof - Walmart.com UrbanX Silicone License Plate Frame For BMW M240i xDrive 2 Pack Car License Plate Cover, Universal US Car Black License Plate Bracket Holder. Rust-Proof, Rattle-Proof, Weather-Proof - Walmart.com](https://i5.walmartimages.com/asr/406ddd1b-efd2-4532-bdb2-a83fd4675b86.ee766d9cc7b9234f221a1c8d4a7dbb28.png)
UrbanX Silicone License Plate Frame For BMW M240i xDrive 2 Pack Car License Plate Cover, Universal US Car Black License Plate Bracket Holder. Rust-Proof, Rattle-Proof, Weather-Proof - Walmart.com
![Good morning 🌞, 540i here Msport 2017, question: why only one exhaust working, Ik the other one kicks in when I'm driving highway speed, can I unlock it ? Would it harm Good morning 🌞, 540i here Msport 2017, question: why only one exhaust working, Ik the other one kicks in when I'm driving highway speed, can I unlock it ? Would it harm](https://preview.redd.it/fpv2txvw0d281.jpg?auto=webp&s=efe7f41c7db948c8e396ab7d15cca297bee3f68f)