E46 UK Rust Prevention & Treatment - Sills, Arches, Underbody. Show Us Your Work!
Posted: Fri May 30, 2025 1:37 pm
Hi fellow UK E46 owners,
It's no secret that the UK climate can be harsh on our cars, and the E46 is susceptible to rust if not properly cared for. This thread is dedicated to discussing rust prevention and treatment strategies specifically for E46s in the UK.
Let's talk about common rust areas and how to tackle them:
Don't forget to mention your E46 model and year.
It's no secret that the UK climate can be harsh on our cars, and the E46 is susceptible to rust if not properly cared for. This thread is dedicated to discussing rust prevention and treatment strategies specifically for E46s in the UK.
Let's talk about common rust areas and how to tackle them:
- Rear Wheel Arches: Probably the most notorious spot. How do you prevent it? Best way to treat bubbles or surface rust? Full arch repair/replacement experiences and costs in the UK?
- Front Wheel Arches & Wings: Also prone to bubbling.
- Sills / Jacking Points: Often hidden rust. How to inspect and protect?
- Underbody / Chassis Rails: What underseal products do you recommend for UK conditions (e.g., Bilt Hamber, Dinitrol, Lanoguard)? DIY application tips?
- Boot Lid / Tailgate (especially Tourings): Around the handle, number plate lights.
- Fuel Filler Neck Area:
- What are your top rust prevention tips for an E46 driven daily in the UK? (e.g., regular washing, arch liner cleaning, cavity waxing)
- Show us your rust repair projects! Before and after photos are very welcome.
- Recommendations for good body shops or rust treatment specialists in the UK?
- What are the best products (rust converters, primers, paints, underseals, cavity waxes) available in the UK market?
- How to deal with MOT advisories/failures due to rust on an E46?
Don't forget to mention your E46 model and year.