You really need to decide how far you want to go with this job. I work on my car as a hobby and so quite often do jobs that probably don't need doing and may return very little benefits. The timing chains being possibly one of these jobs. Replacing the chains will make the job a little more complex and time consuming with the additional risk of getting the timing wrong on Re-assembly.
When I did mine I did it as part of a whole load of work that I was doing at the time. I had the front of the car completely off and was doing the timing belt, water pump, oil cooler water leak etc all at the same time. Doing the chains only added a little extra time to my job but may be proportionally more to yours.
When I compared old chains to new I could not see any definitive difference between them. It maybe I changed them for no reason.
I do just simply have a mentality that "if I'm in there anyway" I may as well do it. It's not a cheap way to live.
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Audi S8 D2 2002 88k mls
Ebony pearl effect black. Grey interior.
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