Will thicker bar aftermarket front kidney grill hurt cooling?

[carcar123454321]

So, I'm probably being over-analytical, but saw some aftermarket front kidney grills and really like the all black and in this case, thicker 2 bar design (more modern). the only worry I have is they seem to block a lot more than the thin "blades" on the stock grills and cooling is one thing these cars don't need "less" of. Thoughts?

[blue135]

I made the switch to the "more modern" design some time ago on my 135i. Since then I have not notices any real difference in water temperature (I monitor through OBD). Traffic and throttle use seem to have greater impacts.

[an3ony]

had them on my 135i and no difference whatsoever. top tip though; when I installed mine, I had to actually heat the plastic tabs on the new grilles and bend them "outward" a bit for them to seat properly.