I’m on 21” FI-R’s as well and have not felt any tramlining. I was originally on HR 550’s and just swapped to KW V4’s.
I’m on Michelin PS4S 295/285 -30-21’s.
When you installed the suspension did you have an alignment done? If not, I would probably do that and see if it helps .. at 1000 miles your springs are fully settled.
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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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