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Discussion Starter #1
(Yes, I searched first!) I've gotten conflicting opinions. My experience is to always replace shocks/struts in pairs but some say the 4C system can compensate for uneven wear. Got 86K on them. I'll probably go ahead and do both regardless, but I am curious. Thanks.
 

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Automotive tech here- at the very least, I always replace suspension items per axle. I treat them the same way as anything in the brake system.
 

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100% agree with JRL, you should replace in pairs. I don't know how someone can claim the 4c system compensates for different shock heights and response rates between one good new and one used. Nothing in the way I've seen it's designed would make me think that was possible. It's a simple semi-active suspension system which only adjust dampening rates of the strut based on state information like ride height, accelerometer, steering angle, braking force etc. I don't think it has a feedback to match rates between an old worn strut and a new one.
 

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At that mileage, you should really do both with new units. If you're just trying to save some short-term $ , you could buy a known good used unit from a dismantler/member part-out.
 

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If you have shocks that are significantly different in age/mileage (especially in the rear) you will be more vulnerable to sidehop issues, not worth it.
 

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Discussion Starter #7
I agree- another member suggested doing one only and that's seems penny wise and pound foolish.
 

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Do you buy just one new shoe?
 

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Since you want the same dampening on both sides of the car you always want to replace struts/shocks in pairs. That being said, all mine are still doing fine at 160,000 miles, so how many miles it takes to wear out a set have a lot to do with the conditions under which they are operated.
 

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Mine are at 105K and doing great. Have the strut mounts seats replaced though...


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