Does your tach drop a lot when you apply the brakes
from low speed? Like below 650 RPM?
The loud squeaks could be the wear sensor on your
brake pads scraping the rotor or the pad not having
any grease on the back. Take your wheels off and
see cause if it's cutting grooves in your rotors they'll
need turned or replaced. Also if your pads are dead
you wont stop worth a crap.
Hmmm...not sure about coilovers. Cant really switch
the tophats on them :/
I have the 205/55/16's from the WRX on my car now
and the tires sit really, really close to the spring perch.
Any wider or taller and they would rub without spacers,
but spacers kill your wheel bearings a lot faster.