No, it was higher than that during track conditions for sure. I think it would creep up to 250 to 260, a lot better than the 290s I was getting to BEFORE the oil cooler. Like I mentioned, with better airflow to the cooler I think you'll be fine. If you're even the slightest bit concerned, just get the 25 row for a little extra cooling capacity.
No fitment issues with the Gruppe-S here