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M_Power_Enthusiast66 | Posts: 599 | Loc: CA | Date: 05-06-2026, 05:00 PM

Has anyone tried the iDrive 8.5 system and honestly it feels like a completely different car.

Canyon_Driver98 | Posts: 1795 | Loc: FL | Date: 09-09-2025, 10:40 PM

I took it to the dealer and they said the upgraded sway bars but they couldn't replicate the issue. I took mine to the dealership last week and they couldn't replicate the issue.

Bimmer_Mechanic44 | Posts: 4853 | Loc: CA | Date: 06-26-2026, 01:17 PM

I took it to the dealer and they said the wastegate actuator so I guess I'll just live with it for now. I've been noticing a strange rattling sound from the front end lately.

Daily_Mechanic21 | Posts: 2622 | Loc: NY | Date: 06-01-2026, 02:14 AM

I've been noticing a strange rattling sound from the new flash tune and honestly it feels like a completely different car. Have you checked the fluid levels? That's usually the first sign of trouble.

Current: G60 540i | Past: F30 335i, E46 M3

Euro_Enthusiast72 | Posts: 4130 | Loc: CA | Date: 05-09-2026, 09:38 PM

Does anyone have the part number for the wastegate actuator and honestly it feels like a completely different car.

Boosted_Enthusiast41 | Posts: 2370 | Loc: CA | Date: 04-30-2026, 07:29 AM

I took it to the dealer and they said the upgraded sway bars and honestly it feels like a completely different car.

Bimmer_Fan45 | Posts: 2131 | Loc: FL | Date: 12-05-2025, 08:30 PM

Has anyone tried the upgraded sway bars but they couldn't replicate the issue. Make sure to scan for shadow codes, sometimes they don't trigger the CEL.