I hope i did not need to replace my rotors. I just did the brake pad but i did not see anythign wrong with the rotors, how can you tell besides looking at them? When i brake sometimes my wheel moves back and forth- is this formthe balancing of the tires.?

 

Unless there are grooves in the rotors typically you don't have to turn them. What causes your steering wheel to move is brake roughness, caused by uneven lining transfer on the rotors. Turning them would cure it but I would reccomend changing the pads to a good brand as well.

 

sigmanu1524- With age and mileage the rotor's surface becomes burnished. It looses it's effective friction and creates heat (which can warp the rotor). Turning the rotor removes this "surface" and trues up the concentric rotation. You generally measure the rotor thickness and the runout. The visual inspection is considered a starting point.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 4.10LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Pirelli Scorpion Zero 275/60/16s, Mobil 1, K&N oil filter.

 

Sounds like they may very well be warped, and there are many causes for warpage-- excesive or uneven torque on lugs, cold water on hot rotors, to thin/worn, and on and on.
They can be rough to remove, especially on the 4x4's.
Good Luck!

 

sigmanu1524, you oughta have the rotors miked for warp. My '98 eventually started to shake me out of the cab.
Do it just ot be on the safe side!