Battery OPTIMA or OEM BMW

I don't see it as overkill. It might have unused capacity, but I'd also rather have a battery that stands up to more than just enough.

I e been happy with them in my last 3 vehicles.

I had an Optima red top in my 89 4runner and that thing lasted for 12 fucking years. Needless to say I bought another one.

Just did that on my 19 gsw, no battery management extra thing to deal with, just the two connectors and obd11 for coding to fleece (not binary agm). Only issue I have is the battery blanket doesn't fit the bigger size.

I have optima yellow and it’s lasted 150,000 miles so far and not slowing down

As previously stated. I have had an Optima Red Top in my Cabriolet for nearly 7 years and have never had a problem. During that that tiome, the battery sat out of the car for almost a year with only occasional bench top charging and was perfectly OK when put back into service. Also, recently I screwed up and left my lights on. The battery was dead dead the next morning. 1.43 volts present to be exact. Took some time but I was able to bring it back up, and it has been performing well ever since. Optima even has a video out about how to bring back a completely dead battery.

The red top really isn't that special and optima's tech in general is more beneficial in regard to durability than current delivery.

my 2009 had an optima and it only lasted 2 years

I have only had poor luck with optimas

At 126,000 miles in 2016, we had the battery replaced with an Optima yellow top dry battery. It lasted around 2 years and was replaced in September of 2018 under warranty. Today, my car suddenly wouldn't start, and after getting a jump and going to Autozone, it showed the battery had zero charge. They didn't have another yellow top, so I got a wet battery, one of the only ones available. What sucks is I checked the warranty date and it expired 4 days ago. I'm quite disappointed that the average life I've seen with these are under 3 years.