what is the difference between upper and lower arms

[kraizytommie]

i just bought a 97 e39 528 and this dayum car has the shimmies under braking only. i have replace the thrust arms and it only cured about 75% of the prob. would the lower arms help if changed? any ideas would be appreciated.. TIA

[632 Regal]

the tires could be going square or the rims could be bent. If you replaced the thrust arms there isnt much left besides the rest of the steering equipment.

[Mr. BILL]

I have an E39 also. They are very sensitive to proper torque for the lug nuts. Have you tried using a torque wrench? I think it's 90ft#. However, it could be the rotors.

[632 Regal]

dirt/scale between the rim, rotor & rotor & hub.