Originally Posted by morfinx
Both of my E92 and my E89 have Coral Red interior. I use Gliptone Liquid Leather. Used to have to buy them from UK, but I've recently found them on Amazon.
I second this. Have been using gliptone for years on my 635. It's 28 years old and the original leather looks like new. With other cleaning products I find myself swinging from one product to another. However with this I have not found anything that is even close.