I ve got quite a heavy German Built caravan that my Superb Wagon 2.0 CRD 170  Pulls really well,  However the loading on the rear springs produces an Angle ( V ) Which looks quite bad and occasionally bottoms out the Caravan jockey wheel over speed humps e.t.c.

 

The rear springs aren't bottomed out and theres no wheel rub , it just looks a bit off when towing.  

 

Has anyone fitted Spring Assisters?  There like round rubber coils which wind into the the rear springs and stop them compressing so far!  If so does anyone know the size required.  Basically the gap between each coil in the rear springs in mm.

I dont like them, they are a complete bodge and compromise the ride and handling when not towing unless removed.

 

On my Octavia 1 I fitted Grayston assister springs which fit up inside the existing coil springs and are very easy to fit, Graystin also manufacture the rubber ones so dont confuse the two types.

 

On my MK2 Octavia I simply fitted the rear springs for the "rough road package" or whatever VAG call it, I found the part numbers and bought Lesjofors equivalents, they do the same if not better job than the Grayston inner coil springs and were cheaper, the ride height was slightly increased.

Thanks for the response,  I have read on various other forums that Rubber Spring Assisters could compromise the ride and handling of a vehicle when not in use.  I was not aware of the alternatives and will have a look at the ones you've mentioned.   I also thought at upgrading the shocks to the rear or even looking at an air system, but these are pricey.

I so miss the Boge self levelling struts that were fitted to the various Sierra Estates that I used for business, those vehicles were the best ever for ride & handling when towing or unladen.

12 hours ago, magicw said:

I ve got quite a heavy German Built caravan that my Superb Wagon 2.0 CRD 170  Pulls really well,  However the loading on the rear springs produces an Angle ( V ) Which looks quite bad and occasionally bottoms out the Caravan jockey wheel over speed humps e.t.c.

 

The rear springs aren't bottomed out and theres no wheel rub , it just looks a bit off when towing.  

 

Has anyone fitted Spring Assisters?  There like round rubber coils which wind into the the rear springs and stop them compressing so far!  If so does anyone know the size required.  Basically the gap between each coil in the rear springs in mm.

 

The Skoda Superb MK2 estate OEM part number is 1K0511115DE (length 362mm, thickness 12.25mm)

 

You might be able to replace this with OEM part number 1K0511115BL (length 365mm, thickness 12.5mm) if you want a stiffer and longer spring. This spring is normally used on some 4x4 versions of the Skoda Superb MK2 estate. 

Edited 16 February, 20206 yr by Carlston

I fitted these to my old Volvo years ago, brill bit of kit. Back end used to sag and catch like yours and looked awful, used to say to wife one day am gonna get stopped due to to looking well over loaded. but luckily fella up road had a Volvo with a caravan and it was him that put me on to them.

can get a compressor to go with them but that was very expensive so just used the one I had for blowing car tyres up with the valve in the boot area.

tried to do a search if available for a superb but can’t find anything but may be worth a call.

would be looking myself but never had any issues with my superb and caravan 

You might be able to replace the standard rear Skoda Superb MK2 estate rear springs Skoda OEM part number 1K0511115DE (thickness 12.25mm, length 362mm) with one of the following springs:

 

1K0511115BK (thickness 12.25mm, length 371mm)

 

1K0511115DF (thickness 12.50mm, length 359mm)

 

1K0511115BL (thickness 12.50mm, length 365mm)

 

1K0511115DK (thickness 12.50mm, length 380mm)

 

1K0511115BM (thickness 12.75mm, length 370mm)

 

The gknautomotive.com online catalogue can be used to provide useful information on springs.

Edited 16 February, 20206 yr by Carlston

OK I don't tow a caravan but do have a four bike bike rack that goes on the back of our Octavia 4x4.  It used to sag at the back and was a bit 'floaty' at speed with the four bikes on and the boot loaded so I bunged on some of the Grayston rubber spring assitors and it's now fine...   ride height remains good and it's stable at speed.  Unloaded it's hard to spot any difference between the before and after.

Cheers Guys some great responses on here!  I m off to the NEC to the Caravan and Leisure show this week so will have a look on some of the stands there.  

This was discussed at some length here:

 

16 hours ago, Carlston said:

You might be able to replace the standard rear Skoda Superb MK2 estate rear springs Skoda OEM part number 1K0511115DE (thickness 12.25mm, length 362mm) with one of the following springs:

 

1K0511115BK (thickness 12.25mm, length 371mm)

 

1K0511115DF (thickness 12.50mm, length 359mm)

 

1K0511115BL (thickness 12.50mm, length 365mm)

 

1K0511115DK (thickness 12.50mm, length 380mm)

 

1K0511115BM (thickness 12.75mm, length 370mm)

 

The gknautomotive.com online catalogue can be used to provide useful information on springs.

What are the PR numbers for those different springs?

 

The Superb 2 has at least 9 different weight ranges for springs (basically how much load the springs can take without sagging), plus three different options for ride height, a matrix of 27 possible configurations. Each will have a combination of spring and damper engineered to work for that application. Just blindly swapping springs could lead to unpredictable suspension behaviour on the road as the spring and damper are not matched to each other, or to what's on the front of the car.

4 hours ago, chimaera said:

What are the PR numbers for those different springs?

 

The Superb 2 has at least 9 different weight ranges for springs (basically how much load the springs can take without sagging), plus three different options for ride height, a matrix of 27 possible configurations. Each will have a combination of spring and damper engineered to work for that application. Just blindly swapping springs could lead to unpredictable suspension behaviour on the road as the spring and damper are not matched to each other, or to what's on the front of the car.

 

You can get the PR numbers by looking at the Skoda online parts catalogue.

 

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/SUP/year/2012/drive_standart/632/hg_ug/511/subcategory/511001/part_id/2561497/lang/e

 

Here are some standard rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115BF  (diameter 11.75mm, length 354mm)

1K0511115BG (diameter 11.75mm, length 355mm)

1K0511115BH (diameter 12.00mm, length 364mm)

1K0511115DE  (diameter 12.25mm, length 362mm)

1K0511115DF  (diameter 12.50mm, length 359mm)

1K0511115BL  (diameter 12.50mm, length 365mm)

3C0511115AF (diameter 12.75mm, length 358mm)

3C0511115AG (diameter 13.00mm, length 362mm)

3C0511115AH (diameter 13.00mm, length 364mm)

3C0511115AJ (diameter 13.25mm, length 358mm)

Edited 17 February, 20206 yr by Carlston

That doesn't show which PR numbers a specific car has, which renders your list of part numbers largely redundant.

Here's a Skoda online parts catalogue

 

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/SUP/year/2012/drive_standart/632/hg_ug/511/subcategory/511001/part_id/2561497/lang/e

 

Here are some standard rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115BF  (diameter 11.75mm, length 354mm)

1K0511115BG (diameter 11.75mm, length 355mm)

1K0511115BH (diameter 12.00mm, length 364mm)

1K0511115DE  (diameter 12.25mm, length 362mm)

1K0511115DF  (diameter 12.50mm, length 359mm)

1K0511115BL  (diameter 12.50mm, length 365mm)

3C0511115AF (diameter 12.75mm, length 358mm)

3C0511115AG (diameter 13.00mm, length 362mm)

3C0511115AH (diameter 13.00mm, length 364mm)

3C0511115AJ (diameter 13.25mm, length 358mm)

 

Here are some heavy duty rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115CN (diameter 12.00mm, length 381mm)

1K0511115CR (diameter 12.50mm, length 380mm)

1K0511115CS (diameter 12.75mm, length 382mm)

1K0511115CT (diameter 13,00mm, length 383mm)

 

Diameters and lengths taken from the gknautomotive.com online catalogue.

Edited 17 February, 20206 yr by Carlston

Here's a Skoda online parts catalogue

 

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/SUP/year/2012/drive_standart/632/hg_ug/511/subcategory/511001/part_id/2561497/lang/e

 

Here are some rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115BF  (diameter 11.75mm, length 354mm)

1K0511115BG (diameter 11.75mm, length 355mm)

 

1K0511115BH (diameter 12.00mm, length 364mm)

1K0511115CN (diameter 12.00mm, length 381mm)

 

1K0511115DE  (diameter 12.25mm, length 362mm)

 

1K0511115DF  (diameter 12.50mm, length 359mm)

1K0511115BL  (diameter 12.50mm, length 365mm)

1K0511115CR (diameter 12.50mm, length 380mm)

 

3C0511115AF (diameter 12.75mm, length 358mm)

1K0511115CS (diameter 12.75mm, length 382mm)

 

3C0511115AG (diameter 13.00mm, length 362mm)

3C0511115AH (diameter 13.00mm, length 364mm)

1K0511115CT (diameter 13,00mm, length 383mm)

 

3C0511115AJ (diameter 13.25mm, length 358mm)

3C0511115BL (diameter 13.25mm, length 368mm)

 

Diameters and lengths taken from the gknautomotive.com online catalogue.

Edited 17 February, 20206 yr by Carlston

Why do you keep posting that?

On 16/02/2020 at 21:55, Snapper1725 said:

I fitted these to my old Volvo years ago, brill bit of kit. Back end used to sag and catch like yours and looked awful, used to say to wife one day am gonna get stopped due to to looking well over loaded. but luckily fella up road had a Volvo with a caravan and it was him that put me on to them.

can get a compressor to go with them but that was very expensive so just used the one I had for blowing car tyres up with the valve in the boot area.

tried to do a search if available for a superb but can’t find anything but may be worth a call.

would be looking myself but never had any issues with my superb and caravan 

 

I installed these on my Dad's Volvo Estate 740 way back when - sorted a saggy bottom out especially when towing his caravan.  Don't think they are available except a few for "legacy" cars

 

 

Edited 17 February, 20206 yr by bigjohn

15 hours ago, Carlston said:

Here's a Skoda online parts catalogue

 

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/SUP/year/2012/drive_standart/632/hg_ug/511/subcategory/511001/part_id/2561497/lang/e

 

Here are some standard rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115BF  (diameter 11.75mm, length 354mm)

1K0511115BG (diameter 11.75mm, length 355mm)

1K0511115BH (diameter 12.00mm, length 364mm)

1K0511115DE  (diameter 12.25mm, length 362mm)

1K0511115DF  (diameter 12.50mm, length 359mm)

1K0511115BL  (diameter 12.50mm, length 365mm)

3C0511115AF (diameter 12.75mm, length 358mm)

3C0511115AG (diameter 13.00mm, length 362mm)

3C0511115AH (diameter 13.00mm, length 364mm)

3C0511115AJ (diameter 13.25mm, length 358mm)

 

Here are some heavy duty rear springs for the Skoda Superb MK2 estate where aftermarket springs are available to match the Skoda OEM part numbers.

 

1K0511115CN (diameter 12.00mm, length 381mm)

1K0511115CR (diameter 12.50mm, length 380mm)

1K0511115CS (diameter 12.75mm, length 382mm)

1K0511115CT (diameter 13,00mm, length 383mm)

 

Diameters and lengths taken from the gknautomotive.com online catalogue.

The point you're missing here is that you can't just randomly throw a pair of springs onto the rear axle and hope it will work.

 

The suspension is engineered as a system, so that both axles work together at the desired ride height and weight range. Changing one component in this without checking its effect on other components is at best going to lead to extra tyre wear and at worst, unpredictable handling and vehicle instability.

 

If the OP decides they want to change out the springs to something heavier, they will need to select springs that are compatible with the car's ride height specification first, then ensure that the dampers they have on the car already are appropriate, and if not change those, and alongside all this ensure that their selection is compatible with what is fitted on the front axle. Going down this road, you may potentially need to change springs and dampers on all four corners, not a cheap prospect.

 

In cases like this where extra weight carrying ability is not needed all the time, assist systems are a better option as they are engineered to stay out of the way under normal loads and only come into play under larger loads.

does anyone have the info for a standard superb spring vs a greenline rears?

 

the front suspension is a strut, are gas adjustable/ride height available?

4 hours ago, lichfielddriver said:

does anyone have the info for a standard superb spring vs a greenline rears?

 

the front suspension is a strut, are gas adjustable/ride height available?

 

The greenline uses sport springs which lower the ride height by about 15mm. I don't have the part numbers for these sports springs. Below are the part numbers for the standard ride height springs.

 

The Skoda OEM part numbers for the front and rear springs on the Skoda Superb MK2 estate 1.6TDI are:

 

Skoda Superb MK2 Estate 1.6TDI front spring 3C0411105B (thickness 12.75mm, length 338mm, outer diameter 140mm, weight 2.20kg)

Suplex 39311

https://www.ebay.co.uk/itm/Fit-with-SKODA-SUPERB-Front-Coil-Spring-39311/323886083310?hash=item4b691d6cee:g:GdsAAOSw1UFdVwJE

 

Skoda Superb MK2 Estate 1.6TDI rear spring 1K0511115DE (thickness 12.25mm, length 362mm, outer diameter 118mm, weight 2.20kg)

Suplex 39291

https://www.ebay.co.uk/itm/Suplex-Spring/174107759400?hash=item2889a19328:i:174107759400

 

The hatchback version of the same car has the same front springs, but uses slightly softer rear springs. Part number for the Skoda Superb MK2 Hatchback 1.6TDI rear springs is 1K0511115BH (thickness 12.00mm, length 364mm, outer diameter 117mm, weight 2.10kg). Suplex 39308

 

It always worth checking the part numbers for your car at a Skoda dealer parts department. Your car may have been factory ordered with sports suspension (about 15mm lower than standard) or off-road suspension (about 15mm higher than standard).

 

Spidan and Suplex coil springs are both made in Germany and both share the same specification. However, Spidan seems to be marketed in Germany, whereas Suplex seems to be marketed in the UK...hence the ebay links to Suplex springs rather than Spidan springs. It's possible they could be the same springs, just marketed under different brand names. The gknautomotive.com online catalogue gives the Spidan part numbers and not the Suplex part numbers, but you can find the equivalent Suplex part numbers on autodoc.co.uk However, ebay is often cheaper than autodoc.co.uk

Sources of information:

 

gknautomotive.com

autodoc.co.uk

suplex.de

Outstanding Quality!

• The highest quality chrome vanadium and silicon chrome alloy steels

• Carefully controlled shot peening process significantly increases
  the fatigue life of the spring

• Phosphate coating to protect the spring steel from corrosion

• Tough, epoxy powder coating protects the underlying spring steel
  from mechanical damage

 

Edited 22 February, 20206 yr by Carlston

on level ground 3/4 tank of fuel no driver/passenger i have 650mm ground to top of inside wheel arch, from centre of wheel to wheel arch 360mm

 

now to find another superb to measure.

 

 

On 18/02/2020 at 13:19, chimaera said:

If the OP decides they want to change out the springs to something heavier, they will need to select springs that are compatible with the car's ride height specification first, then ensure that the dampers they have on the car already are appropriate, and if not change those,

 

Are you able to show that there are an equal number of compatible shock absorbers with "appropriate" ratings listed to be used with the different spring ratings?

 

I suspect there will be no more than two, possibly only one.

Edited 23 February, 20206 yr by J.R.

1 hour ago, lichfielddriver said:

on level ground 3/4 tank of fuel no driver/passenger i have 650mm ground to top of inside wheel arch, from centre of wheel to wheel arch 360mm

 

now to find another superb to measure.

 

 

There is no point finding another superb to measure as that more than likely will be the same 

I linked you to a post on another thread you started all the measurements are on it😕

379.1 for rear and yours is at 360 nearlt 20mm

Get springs changed the estates rear springs are crap O.E go for Lesjofors have lasted much longer than the 45,000 I was getting from O.E

Edited 23 February, 20206 yr by DEL80Y

Well after a bit of research I ve found the perfect solution to this.  I ve convinced the Mrs to let me buy a Kodiaq

Good choice.