I installed H&R springs on my car and first noticed the car to shake under acceleration. I gotten the car aligned and driven it for a few hundred miles.
Somewhere in the hundred miles, the shaking under WOT is gone but there seems to be like a rotational noise (and can feel as if the car has a minor flat-side on the tire )that you can hear slightly if you are on a nice flat road. I rotated the tires to see if it was perhaps one of my tires.
The problem persisted. After, I noticed that my rear tires have heavy negative camber visible. (so much for a "lifetime alignment.").

Could this rear negative camber cause the rotational noise/tapping feel? I could tell the shop never tried aligning the rear but will get it aligned this weekend. Would like to know in case its another problem so I could attempt another possible solution over the weekend.

 

if you're still on stock rear lower control arms i don't think you can get back to stock alignment along with the H&R springs. at least that was/is the case for the earlier generation MINI. I suspect the same might be true for the newer gen, only 1/2 a degree camber adjustment available?

what do you mean by "lifetime alignment?"
did you pay the shop for a lifetime alignment deal? you should be able to take it back to them for a corrected alignment but like i said, you may not be able to get there if you don't have the full adjustable range necessary.

other things to consider: wheels balanced? if you're running aftermarket wheels make sure you have hubcentric rings

 

You should read this:
https://www.northamericanmotoring.co...-lowering.html
I believe the bearings take a set and after 1000 miles or so vibration goes away. Others think alignment helps.

 

Ah, thanks, I dont have any aftermarket wheels on the car, the only tire I replaced got balanced so I dont think it would be balancing, but will take that in consideration. Thanks for link. So is alignment a possibility?