• Welcome to N-cars.net - the largest Hyundai N car forum. Check out the model specific sections below and scroll down for country specific forums. Scroll down for i30 N, Ioniq 5 N, i20 N, Veloster N and Kona N forums! Check out the i30 N Bible Here!

Suspension and Chassis LSD on maximum turn manouvers

Toggle sidebar Toggle sidebar
I noticed this about a month or go. Thought it was the road surface originally. Now these past couple of weeks it’s become more noticeable. I’m at 9k and still using the original wheels.

Perhaps the cold has amplified it somewhat, perhaps my tires need replacements too. Glad it’s not just me though.

Is the general consensus agreed by Hyundai that it’s normal at this time of year with slippery roads and near 0C temperatures?

I saw on Facebook that someone reported the problem to their dealership and they had their passenger side suspension strut replaced.

I’m hoping to get my first 10k service done before Xmas if I find the time. I want to make sure they look at this potential problem.
 
I suppose we’re all assuming the noise we’re hearing on our cars, is the same and the solution is the same.

If I had hit a big pothole and then started to hear this noise, for example, then I wouldn’t be comfortable just thinking it’s ‘normal’ and part of the LSD. You know what I mean?

It does sound like the same thing @RawZ05. Are your front tyres nearly finished? As I’d perhaps look at changing the brand as that seems to have helped me.....
 
Crocoman said:
I suppose we’re all assuming the noise we’re hearing on our cars, is the same and the solution is the same.

If I had hit a big pothole and then started to hear this noise, for example, then I wouldn’t be comfortable just thinking it’s ‘normal’ and part of the LSD. You know what I mean?

It does sound like the same thing @RawZ05. Are your front tyres nearly finished? As I’d perhaps look at changing the brand as that seems to have helped me.....
Click to expand...


I have the same issue, loud enough to turn heads during a parking manoeuvre. For me it’s related to traction levels, wet slippery surface equals loud noise, dry grippy surface barely noticeable. Also tallies with tyre wear as others have noticed i.e the less tread, the more slippy, the more you get it hence most of us not getting it from new. Slippy Diff!
 
  • Like
Reactions: Stash-N
Benclear82 said:
I have the same issue, loud enough to turn heads during a parking manoeuvre. For me it’s related to traction levels, wet slippery surface equals loud noise, dry grippy surface barely noticeable. Also tallies with tyre wear as others have noticed i.e the less tread, the more slippy, the more you get it hence most of us not getting it from new. Slippy Diff!
Click to expand...
I will throw my 2cents in too. One month old car and tight car park turns on hotmix bitumen at walking speeds.
Does not make a noise but I can feel the wheels bump slightly. Again I think you are all correct with the eLSD being the route cause.
 
Stash-N said:
I will throw my 2cents in too. One month old car and tight car park turns on hotmix bitumen at walking speeds.
Does not make a noise but I can feel the wheels bump slightly. Again I think you are all correct with the eLSD being the route cause.
Click to expand...
had that My self. so now it makes sense.....
 
Had it on my car since temperatures dropped to under 10°C. Changed to wintertyres (19 inch) a month ago. Haven't heard it since...
 
Crocoman said:
I suppose we’re all assuming the noise we’re hearing on our cars, is the same and the solution is the same.

If I had hit a big pothole and then started to hear this noise, for example, then I wouldn’t be comfortable just thinking it’s ‘normal’ and part of the LSD. You know what I mean?

It does sound like the same thing @RawZ05. Are your front tyres nearly finished? As I’d perhaps look at changing the brand as that seems to have helped me.....
Click to expand...

Averaging 3mm left on the fronts. Slightly less so on the left front. Will be getting them replaced at the service in a few weeks.
 
  • Like
Reactions: Crocoman
What are you going for @RawZ05?

As I say,the Goodyear F1’s have really impressed me. Had to do a couple of runs doing some twisty B roads on Thursday night in the pouring rain, and the car was stuck to the road. Really impressive.
 
  • Like
Reactions: simmo777, Manted and _Emma
Today was a bad day with cold temps and just generally wet. The N normally handles it well considering it’s FWD and power, but today was a mess. Spinning those wheels in 1st 2nd and 3rd without putting the foot down completely. This service can’t come soon enough before the freezing temps come along.

Not sure what tires to get though. Sticking with 19s. I don’t like the look of the N with 18s. Doesn’t suit it.
 
  • Like
Reactions: _Emma
RawZ05 said:
I saw on Facebook that someone reported the problem to their dealership and they had their passenger side suspension strut replaced.

.
Click to expand...

Some people in another thread claim everything was ok with odd sounds, took to the dealer i have 2 suspension struts, a pair of brake discs and steering rack be replaced
 
  • Like
Reactions: simmo777 and Crocoman
Bigbruiseral said:
Some people in another thread claim everything was ok with odd sounds, took to the dealer i have 2 suspension struts, a pair of brake discs and steering rack be replaced
Click to expand...

Wow, that’ll be me in at service time in March! Lol.

That’s a car that has been properly abused by the sounds of it!
 
Update they have ordered the wrong parts twice now so I will have been without my car for 12 days before they expect it back in normal working condition
 
I am not 100% sure but it looks like Hyundai is using eLSD produced by BorgWarner. Their eLSD is technicaly LSD (clutch pack inside of diff) but it is not managed by torque difference but ECU what gets input from sensors thru CAN gateway. It also explains why it doesnt have 100% open mode and it will stay half locked even sharp turns and parking. If you are making slow sharp turn, your outher wheel is making longer distance than inner and if eLSD cant operate as a 100% open diff, there will be a cracking noise and inner rim tries to turn faster than required. It will also explain why turning circle of N is so bad (like Lancer EVO). Our rally Subaru has all mechanical differencial locks if we must make slow 90-degrees turn on road section, it sound always like something is going to brake down ;)
As I wrote - I am not 100% sure about eLSD of N, but it looks like this at least for me.
 
  • Like
Reactions: Cygnus X-1, simmo777, paul-h and 2 others
TarmoT said:
I am not 100% sure but it looks like Hyundai is using eLSD produced by BorgWarner. Their eLSD is technicaly LSD (clutch pack inside of diff) but it is not managed by torque difference but ECU what gets input from sensors thru CAN gateway. It also explains why it doesnt have 100% open mode and it will stay half locked even sharp turns and parking. If you are making slow sharp turn, your outher wheel is making longer distance than inner and if eLSD cant operate as a 100% open diff, there will be a cracking noise and inner rim tries to turn faster than required. It will also explain why turning circle of N is so bad (like Lancer EVO). Our rally Subaru has all mechanical differencial locks if we must make slow 90-degrees turn on road section, it sound always like something is going to brake down ;)
As I wrote - I am not 100% sure about eLSD of N, but it looks like this at least for me.
Click to expand...
This description sounds perfectly plausible to me. I would say this is correct.
 
RWD cars (and most of RWD based AWD cars) do not have LSD on front, but many of them will make some skipping/rubbing noise on front tires (as well as LSD-induced rear tire skipping) when you’re doing a slow full lock turn (and it’ll become more pronounced in cold weather or on the slippery surface).

That’s because modern cars do not have true ackermann steering. The steering angle of the inner tire is usually somewhat less than true ackermann, hence the inner tire and the outer tire will fight each other on full lock turn and make some skipping noise as one of the tires loses grip and realign. You can watch those fight in the following videos.


This is not a defect or problem. Both Ackermann-related skipping (front tire) and LSD-induced skipping (can be front or rear or both, depends on a car) are perfectly normal, but possibly very uncomfortable for some over apprehensive worrywarts.

Less grippy tire (such as winter tire) will help reduce the noise, since they tend to lose the grip early on, which results in smooth and gradual slipping rather than hard skippings. Smaller rims (hence taller sidewall) may yield similar result, due to the greater deformation of its sidewall. Also, wheel alignment (toe-in/out) can make this worse or better.
 
Last edited:
  • Like
Reactions: WookieeM, Tom Vanlimbergen and Stash-N
You must log in or register to reply here.

Top Bottom