[Togj1605]

Im lowering my Mazda 3 bm on vogtland lowering springs and dampers, 30mm at the front and 45mm at the rear, om shooting for stock toe, camber and caster does anyone know if i need adjustable camber arms/plates and adjustable rear toe arms?
Does the lowering kit change the stock numbers drastically?
Anyone who has a similary lowered car? How much of a difference did it get compared to stock?

 

[CerealKiller]

You will need some additional items. Megan Racing makes good adjustable camber/toe arms for the rear. SPC makes adjustable strut camber bolts for up front.

You will also need adjustable end links and new bump stops.
CK

 

[n3rd_gen]

That's a pretty moderate drop. Unless you are running an aggressive wheel set up, you might be able to get the alignment fixed without any other additional components.

 

[arathol]

Im lowering my Mazda 3 bm on vogtland lowering springs and dampers, 30mm at the front and 45mm at the rear, om shooting for stock toe, camber and caster does anyone know if i need adjustable camber arms/plates and adjustable rear toe arms?
Does the lowering kit change the stock numbers drastically?
Anyone who has a similary lowered car? How much of a difference did it get compared to stock?

You'll have a bit more negative camber in front, not much you can do about that since there isn't any way of adjusting it back. However, an extra degree or so of negative camber won't hurt anything, its actually a good thing for this car.
The rear will be close, again a bit of negative camber but not so much that it will be a problem.
The real problem with these cars is that there is no rear toe adjustment. Rear alignment is done with a single point that change camber and toe at the same time, so its a thing where you need to find the best balance between the two. The easiest way to fix this is install an adjustable rear toe bar. This way you can still use the factory adjustment to set the camber then use the toe bar as a separate adjustment.

 

[CerealKiller]

That's a pretty moderate drop. Unless you are running an aggressive wheel set up, you might be able to get the alignment fixed without any other additional components.

How?
CK

 

[n3rd_gen]

I did it prior to putting 255s on my car. Full OEM components other than the suspension itself.

Only when adding coilovers and the 255s did I add the camber plates and camber arms, and am not running a toe bar as suggested in the above post.