Vehicle: 2019 Ram 1500 Limited
Tires: Bridgestone Duelers 275/55R20
I bought my truck with 10 miles on it in July 2018 and brought it back 3 days later for the vibration. My vibration happens around 75mph and is constant. It feels like it is coming from the back of the truck. You can feel it in the seat but the steering wheel does not shake. However, if you have a water bottle in the cup holder, you can clearly see the vibration. I am in south Florida so the issue is unrelated to cold weather.
Since I purchased the truck, I've had it back to the dealer 3 times:
1st dealer visit: SA says they drove it at speed limit and "could not duplicate" issue. Total BS.
2nd dealer visit: They said the tires needed to be balanced and performed RFB on all tires. Also, adjusted the camber, caster, sterring and toe. Still have the issue.
3rd (independent tire shop) visit: The shop called me after an hour and said they feel the vibration but the balance and alignment is "perfect". Suggested it could be suspension or drive shaft and I should contact dealer. Come pick up vehicle, no charge.
4th dealer visit: Said two tires needed balancing. Took all weights off and re-balanced. The issue still remains but happens closer to 80mph now. SA not willing to go over 70mph on test drive.
At this point I'm mad. I'm going to replace the tires to see if that fixes the issue, but after that I'm escalating through Dodge until I get it fixed. I used to love this truck but now I'm warning my friends to stay away.
Please post if you come up with a solution.