[DonPedron]

Hello

Currently experiencing some noise in the front passenger strut

Going over speedhumps and adding steering input (right, in the direction of travel) sometimes generates a "Ptwooooing" sound.

Also experiencing some slight steering creak in low speeds.

Anyone have any idea?

Öhlins, New Top mounts (2021-06-01) and problem free before swapping to winter wheels.

I have removed the wheels once -> cleaned hub and rim surface -> 140nm torque to lug nuts

[DonPedron]

**** RESOLUTION******

So the problem occured with winter wheels being fitted

The dimensions of the winter wheels (235/40r18+255/35r18) changed the rake of the car decreasing the tension on the front suspension allowing for movement.

Now if this problem only arises with customs spring rates or no is a different question.

Edit:

I'll add that the front passenger needed a lil' extra preload to avoid spring movement.
I also torqued down the locking ring afterwards

[atlas]

Do you mean the rear was sitting lower than the front (compared to OEM)? What's the OEM ratio?

[DonPedron]

Yes,

Summer wheels are 255/40R18 and 275/40R18

[M Fifty]

Originally Posted by DonPedron

Yes,

Summer wheels are 255/40R18 and 275/40R18

So your Winter front tires are 16mm smaller, while the rears are 42mm smaller.

It may be that you have bigger problems...

[DonPedron]

Originally Posted by M Fifty

So your Winter front tires are 16mm smaller, while the rears are 42mm smaller.

It may be that you have bigger problems...

How so?

Note this;
I'll add that the front passenger needed a lil' extra preload to avoid spring movement.
I also torqued down the locking ring afterwards

[M Fifty]

Originally Posted by DonPedron

How so?

16mm and 42mm are a huge difference in diameter compared to the summer tires. Generally +/- 9mm is the acceptable maximum. Or are these studded?

[DonPedron]

Nokian Hakkapeliitta R3, hard core snow tire but not studded. As grippy as can be in snow and on ice.

I also have a set of wintercontact from Continental, just doesn't cut it for me. That second set is 235/35R19 square. Squiggly back end, terrible grip. Downright scary tires.