Water pump Gates or OEM BMW

I had my 2008 BMW 135i E88 for going on 14 years, it's about to hit 70k miles and looks like new. I've done a couple bolt-ones (IC, charge pipe, Cobb tune). It's been a great car and a blast to drive. I did replace the water pump this past summer otherwise normal maintenance.

I’m on year 3 of a 2020 M240ix and it has cost me nothing besides regular maintenance and premium fuel. Now I expect that to change soonish, as at my last oil change I was told my water pump has a very slow leak and, at some point, will need to be replaced to the tune of $2k.

A 525tds was my first car. Only ever had two problems with it. Heater fuse kept blowing- turned out the previous owners install of the head unit used eletrical tape which over time lead to a cable shorting out on the din cage. Water pump died - oem impeller was plastic. The replacement was metal

I used a gates water pump on mine and have had no issues

Buy the M340i new and prepay your services. Great on gas but insurances and tires have been expensive. Water pump blew at 48k.

I went with a gates.

The cooling system is the major weak point (ask me how I know) - water pump failed before 70k (changed under warranty)

I have Gates start leaking within 10k of installation.

I also had the Gates pump leak within 6 months. The input shaft seal was leaking. Gates used to be a great brand but these pumps are garbage.

I’ve gone through about 3 water pumps all within 10-30k kilometres and each time it’s something leaking other than the gaskets. Either the freeze plug starts to leak or the actual water pump does. Luckily i bought it through napa and they’ve been giving me new ones under warranty but the job takes about 4 hours and each time i have to buy new coolant which is starting to get expensive. The cheapest OEM pump i’ve found from mopar was 1000cad which in itself is crazy because the napa/gates are about $170