[MTribe]

Has anyone else had bad luck with water spotting on the 135i specifically?

I bought an executive demo, 2010 135i with 8k miles, and had the worst water spotting I've seen (not surprised--figured PO didn't care for paint). 16 hours with Zaino Z-PC by hand and they were gone, followed by Z-AIO and three layers of Z-5 w/Z-FX.

Then they came back on the hood, just above the engine, about a week later after one or two drives in the rain (no sprinklers, not left from the wash).

Another few hours with Z-PC and got rid of them again, but this time had the entire hood covered in VentureShield.

Two 1-hour drives in the rain later, and there are water spots etched in the VentureShield!

I'm wondering if the heat of the turbos (N54) bake the water on the hood? I've done a lot of searching and haven't seen anyone else mention anything unusual with water spotting on the 135.

Has anyone else had unusual trouble with water spotting on the hood of their 135?