Whether you live inland, on the coastline, in the mountains, in a village or in a city, whether your vehicle is new or used; rust is a very serious problem for you flashy BMW (Toyota, GM, Ford etc). As my pal William from Toronto rust proofing center rightly says - all cars are subject to at least one of the following factors; rain, snow, sleet, salty air, high humidity, rocksalt, home garage mold, wet roads, atmospheric and man-made chemicals, car washing liquids, etc. - all of which speeds up the corrosion of your vehicle considerably.
Even you have treated your vehicle with expensive anti-rusting products on the surface of the vehicle the problem is not so easy to solve. Apart from the surface, topside and underside panels present very vulnerable areas too. This is what you need rustchecking and rustproofing for.
As my friend William explains, rust proofing is the process of applying rust-inhibiting products, waxes or sealers to the topside, underside and inside of the vehicle's body as well as any other corrosion-risky areas. This is similar but not identical to undercoating which treats only the underside of the vehicle. Rust prevention is something that every vehicle loves and needs!
