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I'm running Michelin PS4S in 275/30/ZR21 and 295/30/ZR21 with zero issues with AWD.
IIRC the 20" OEM setup is 275/285 (35) so staying within one size is very close to stock.
I did quite a bit of research on the acceptable amount of variation from the OEM specs for rolling diameters and the 275/295 was within limits (I don't recall the % variation but do a search on here as there are several threads that discuss it).
I see in your pic that you're considering a setup that has 35 profile in the front and 30 in the back but OEM keeps the profiles the same. I'm not sure that it is an issue but worth researching IMO.
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CURRENT: 22' INDIVIDUAL M5| CHALK | TARTUFO | CCB | MPE | H&R | IND
GONE: 19' M5C| SINGAPORE GREY| ARAGON|VELOS VLS-06|H&R|iPE|IND|XPEL|CF|RADENSO
GONE: 15' F10 M5|BSM|BLACK|VELOS VSS-S2|KW|AKRA|IND|CF |ESCORT 360|VELOS PIGGY
GONE: 13' F10 M5|SG|BLACK|AKRA|KW|IND
LONG GONE: 09' E60 M5|02' E39 M5
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