Vibrates from time to time when it starts accelerating between 20 to 30 miles per hour?

More than likely this is not a tire issue.

If the tires were the issue, then this would not be intermittent as the tires are always making contact with the ground and the vibration or noise would be there anytime, they are spinning. There may be certain roads that they are not as loud on because the roads are in better condition, but they will still be making noise.

More than likely this is a torque converter issue that is vibrating only under certain conditions when it is being applied.

However, we should start with inspecting the tires and that will tell us for sure if there are tire issues.

https://www.2carpros.com/articles/how-car-tires-work

Below you will find a chart that will help with tire issues as well.

If this is not a tire issue, then we need to next put the vehicle in manual 2 or turn off overdrive and see if this vibration changes in any way or goes away.

Please let us know what you find with this, and we can go from there.

Thanks