Since you have to pay to align the car, I generally replace both sides even if just one side is bad. Paying for a second alignment down the road when the other side goes isn't fun.

I find that idler arms are generally overlooked because a lot of people do not know the cars have them. I've seen some real improvements out of idler arms alone on higher miled cars. For the $40 I would attack it as well.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i