Really stuck for answers with this one. I've owned the car for 11 years so I know its history.

I'm having some issues with my 2.0 TDI 170PS DSG FWD Superb elegance estate rear suspension sitting too low with after market parts and wondered if anyone knows the correct dimensions or what the issue could be?

2 years ago the N/S rear was catching on some speed bumps with only myself in and 2 young kids. I had the car in the garage for repairs and while fixing them, a broken coil spring was noticed. This was replaced, but the the problem never fully went away. A month later work was completed on the O/S rear and again another coil spring was replaced and at the same time 2 rear arms and 4 wheel tracking. These were pattern parts from one of the local suppliers.

The cars been catching ever since and having unloaded everything from the car recently, I could tell that the gap from rear tyre to the arch was far too low.

I took the car to a different garage who put it up on the lift. We could see scuff marks to the underside of the newish rear arms, the fuel tank and the plastic covers that run down each side of the car. We noticed a failed shocker on the N/S and decided to book it in for replacement and while the springs are out, measure them and compare the dimensions against the ones stocked at the various local suppliers.

The dimension is 368mm and the diameter of the springs on the car are the same as a new part.

Skoda themselves won't provide a spring length and say that they only use a 3 colour coding system.

We've ran various history and part checks with local after market stockists and all springs listed seem to be the same.

This then turns my attention to the rear arms, as only the springs and arms have been replaced and the ones removed will have been the genuine ones from new.

I can't buy a genuine Skoda rear arm, because they don't keep them for Superbs, and so if they order one I can't return it and they are £450 each.

I'd normally say that springs determine ride height, but it feels like the after market arms could be the issue, but would they really throw out the rear ride height by an estimated 40 to 50mm?

The fact that the arms have score marks to the underside indicates they are too low to the ground because spring length sets the vehicles ride height over the wheels and chassis. The arms can only sit lower if the geometry is different. The ones now installed have a slight camber to them and the mechanic thinks some can be straighter, so I've asked them to order a replacement pattern part to compare to whats on.

The garage needs the car off the lift so it's going to have to be assembled on Monday regardless and I might still have the same issue.

To summarise:

I have 2 rear arms and 2 rear coil springs installed from 2 years ago and the cars now sitting too low.

Currently replacing both rear shockers and damaged bump stops.

If anyone has a genuine rear spring length and or colour code it would be helpful.

@Carlston might be able top assist with specs.

Try Kilen springs as i had good experience with them as you need ones specific to an estate as it sounds like you have either sport springs or saloon springs causing it to be too low.