M6 Wheels on M5 with CP? Need help

[Splatter00]

So the wheels ive been looking for are only available for m6 models.
Here are sizes and offsets

21x9.5 28 offset (Not a concern)
21x11 18 offset

My concern is overall fitment with weight in the back. I out a set of stock m6 343's on for sh*** and giggles and looked great. But im not sure what that offset was, and it was also a 20" rim, not 21. I love the wide look in rear, and just want to see if this will work or not before buying.
Thanks

[carrera2RSL]

Et 18 with an 11 inch rim is way too much that's 7mm beyond a 10.5 M6 rim

[Splatter00]

Originally Posted by carrera2RSL

Et 18 with an 11 inch rim is way too much that's 7mm beyond a 10.5 M6 rim

Ok thanks Carrera

[M4_Ronin]

Yeah i wouldnt do it unless u want to run hella flush negative camber

[carrera2RSL]

Wow, that's aggressive

Assume it does rub ?

[M6-Coupe]

Originally Posted by carrera2RSL

Wow, that's aggressive

Assume it does rub ?

Obviously...Put 2 persons on back seat and then tires will be shredded immediately

[srtoad4]

20x11 +18 is about 10mm too wide in the rear, I am going 20x11 +28 and that will be pretty aggressive.

[carrera2RSL]

Makes sense this is 4mm more than my current set up for the wheel rim edge but you will see the tyre is about 10mm further out than the weel rim I measured with a flat edge across the wheel to see how much the tyre protrudes futher than the rim edge

I suspect your tyre on an 11 inch rim will be nearer 5mm so I expect your trye to be similar to the image below

[M4_Ronin]

Originally Posted by M6-Coupe

Obviously...Put 2 persons on back seat and then tires will be shredded immediately

Actually it didnt rub lol. Had to run -2 degrees in camber. But i also wasnt lowered back then. My driveway is also crooked so it helps me see what it would look like bottomed out. I only ran this set up for a month before realizing i had made a huge mistake. i think offsets where f:+19 r:+14

Now im running M5 fitment forgeline GA1R wheels with centerlock adapters

[M4_Ronin]

They didnt look bad from some angles