This was the first time that either of us have attempted springs, although we have both done B6 Sway bar and brakes. In the end, I would definitely recommend doing this yourself if you have any kind of handiness or are interested in knowing more about how your car works. It took us some time, but it was pretty much all in the easy-intermediate range of skill.
Special shout outs go to the following: ItsDubC and tXfactor and harry here on AZ, and also to rs4-380 on VWVortex.
ItsDubC and tXfactor did this mod some months ago and posted links to rs4-380’s DIY guide and without that, we would never have been able to do this. On top of that, the original DIY was for an A5, so they made a number of comments on a few differences with the A4 which really saved some time. Big respect and Rep to you guys.
harry sold me his 15/20 spacers and they arrived in what I would call mint condition. Thanks very much and rep for you as well!
Below are links to the different DIY guides with comments I have made about them. I combined all of this together, under the subject line because when I was looking for DIY guides, I had a hell of a time finding this information until I had searched and sifted through a number of posts. I am hoping to make it easier for the next guy who wants help with this great mod.
I call this the ‘poor man’s suspension mods’ as what you probably REALLY want to do is get coilovers and wheels instead of springs and spacers. And do both front and back sways/ARB instead of just the back. But I have a limited car budget (darn kids!) so you do what ya gotta do. This is definitely better than doing nothing. All items purchased, including a few tools I didn’t own, was about $800. Pretty reasonable as the coilover wheel alternative would be a minimum of $3000, but likely more.
Part 1 - Springs
H&R Sport Springs
ItsDubC posted the link to the original A5 Spring DIY on VWVortex, courtesy of rs4-380. Here it is.
This DIY is perfect for a guy like me because I didn’t know all of the parts under the car (I do now), so having lots of pics with things circled in bright red made it a snap.
They also posted comments about what is adjusted for the A4:
For us, this was pretty much bang on. Some additional comments that we struggled through:
First of all - all the DIY we looked at the undersides were so clean! How the hell do you guys accomplish this? My car was essentially all grey underneath, even with a rinse. I guess that is due to the dusty summers and harsh winters here in Winnipeg. So I apologize for looking like a pig in the pics.
We didn’t know what the level sensor looked like, but we figured out that it is one of the connectors with the ABS bundle (we were looking for something separate). The cables are released by pushing the plug in and then popping up the clip on the side. Sort of tricky until you do it the first time and then it is fairly simple.
Having two 16mm and two 18mm open/box wrenches was excellent advice. Do it. It makes a few places so much better. In fact, we had a few ‘ratchet box wrenches’ that were a godsend. If you don’t own any, now is the time.
We had two floor jacks on hand, so we used one for the car and the other we used to raise and lower the wheel knuckles to relieve/add pressure where needed. It really helped in getting bolts out and back in.

Our biggest issue was Step 8 and getting the 18mm nut off the top of the strut. We didn’t have a strong compressor, so the impact gun seemed to not do much other than spin the nut. We couldn’t figure out how to do the nut countered with the allen wrench because of course the socket covers up the access to the allen wrench and there is not enough space for a open/box wrench. We totally fluked into having a (pretty much) proper fitting tool made for a chain saw! It is basically a socket with a holder bar which allows for an opening in the top for allen wrench access (pictured). That tool was the hero of the day. We viced the allen wrench and then used our impromtu tool. We spent an hour trying to solve this one til we got lucky. How did other people get it off? Because you wouldn’t restrain the lower strut because it could be scraped/damaged, right?
The Inanimate Carbon Rod!:



Fronts took us 2-3 hours first side and 1 hour the second side. We’re slower than the other guys above but were trying to be careful.
The back was pretty easy. We did not need to release the rear struts at all, as the guys mention above.
We didn’t need a spring compressor, but found that ratchet-straps assisted getting the rear springs out. Not sure if a compressor would have fit in there, and we probably could have gotten them out with anything, but they were handy and it made it a tad easier. The rears definitely go fast when you know what to expect. It took us 2 hours for the first side and honestly, like 20 minutes for the second side.

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