i had shaking when breaking did lots of things
replaced warped rotors, did balancing several times, checked wheels, wheel alignment
well the frond caliper had a cracked seal on it... replaced brake caliper with a rebuild one (105$CAD was happy to see that price) That was the reason my rotors warped , pads are nearly brand new and rotors were also

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Current:
03' BMW X5 4.4i
00' Audi A6 4.2l Quattro
93' VW Jetta (4sale)

Before:
01' Nissan Maxima 20th Anniversary Edition(write off)
97' Dodge Neon(stolen)