ramimardinii

Hello i want to buy springs for my audi a5 but problem is every shop says different springs one shop say 28757-5 and the other one says 28757-4

its a 2017 a5 coupe quattro 3.0 tdi 218 HP

Richr

On TireRack.com the H&R Manufacturer Part # for the 2018 A5 Coupe Sport Spring set is 50385.

ramimardinii

thats even more weird -.-i live Europe do we have different part numbers ?

Glisse

Good luck with that. I am sure half the cars running around on H&R springs are using the wrong versions. Body type, AWD vs FWD, fixed vs adaptive suspension, etc.

28757-4 is the set for an A5 coupé, and the 28757-5 as being for the (heavier) cabriolet. See page 25:
https://www.h-r.com/katalog_2019/index.php

Just be careful, because the set is describing the rear springs. There are 5 springs within the 28757 family. Confusingly, they are individually identified by Roman numerals, rather than Arabic, and I and II are front springs (VA), whilst II, IV and V are the rear springs.

You will see the individual details if you look at the TUV//ABE certification document, which you will need to read carefully to follow the codes, etc. It is in German and English. The front springs for the A5 should be 28757-II (VA), with the rears being 28757-IV (HA). And whilst the certification includes a combination for A4 models with fixed suspension, the A5 models are only showing as adaptive suspension. Could just be what they bothered to certify.

https://www.h-r.com/bin/28757.pdf

You will see the spring rates in the certification document. Amazingly, H&R don't differentiate between engine types, yet your 3.0TDI is substantially heavier over the front axle than a 2.0TFSI. But same spring set, seems a bit odd to me but Eibach is the same IIRC.

I would feel a bit more comfortable with KW Springs, as they use different spring ratings for the various engine options in the A5 models:

https://www.kwsuspensions.co.uk/shop...rings/28210540

ramimardinii

But will they fit? cuz i will get them for 100 dollar i think its worth the money, thats why im just asking for this model, if i get it for the heavier model ill just get abit more stiff ride , i think thats a just good bonus

belzebutt

You'll get your springs for 100 dollars and then replace your dampers prematurely for a few thousand dollars.

ramimardinii

its like saying if 3 extra people sits in the car and the dampers will break the weight different cant be that much

Glisse

I gave you the answer, and all the information, you just need to read it and understand it.

As the cost of installing lowering springs, a new alignment, and most likely a calibration of whatever sensors you may have on the car is going to cost way more than whatever you are spending, let alone saving, on a set of springs, better to get it right the first time.

If you have no idea what you are doing, saving a few bucks buying the wrong springs or inappropriate ones seems less sensible than paying a bit more and going to a suspension specialist to get it done properly. "But will they fit? cuz i will get them for 100 dollar i think its worth the money ..." as your response after having posted the information you needed doesn't inspire confidence.

But that's your choice.

Nikon1

You can lead a horse to water but you cannot make him drink.

— John