[spidertri]

I have the 128i sport/base bumper and don't plan to install an M-sport or Performance bumper so I'd have to remove the fog light and lower cover to get adequate airflow to the oil cooler if it's on that side.

If it's in the middle it gets tons of airflow and at low speeds the fan will pull air through it as well. Though on the side you'd have the high pressure of the bumper and, relatively, low pressure of the wheel well that will pull air through.

Once I get the cooler in hand and I can pull the bumper off it'll probably be more obvious. I just want to make sure it gets as much airflow as possible.