shaking issue on 2023 laramie

[fortos]

hi guys i just got a 2023 ram laramie with 35k kms on it and it had winter tires but it was shaking in the front tires i dont feel it in the steering wheel just in my seats its been at the dealer 2 times i changed the tires for brand new summer tires but still shaking i got the wheels balanced 3 times in 3k kms so now im in the dark its going at the dealer (again) thursday cause nobody knows where its coming from anyone got the same issue ??