One thing about the Thermostat that I have to agree is that yes I replaced my broken thermostat (half open) with a dealer supplied wahler 80C T-stat and it didn't open when it should. So I went to Autozone (a convenient walking distance from my apt.) and replaced it again.. now it runs great.

I thought my Radiator for $300 was expensive.. I can't believe that yours costs a whoppin $800 (from Fastlane..)... damn..

If the rest of the car is great though I'd go with a new radiator...

sorry I can't be of more help..

Good luck! Keep these 116's running!

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2008 BMW 335i Coupe