RIM OUT OF ROUND Questions

I Have A 98 Chevrolet Cavalier 4.2l Automatic. I Have A Constant Thumping Sound And Vibration. It Almost Feels Like The Engine Is Rocking...

I've Been Experiencing A Slight Wheel Vibration When Driving On The Highway. The Vibration Starts At Around 60-65mph And It Doesn't Go Away...

1999 Bmw 525i Mileage: 97,000. I Recently Purchased What Appeared To Be An Exceptionally Well Maintained 525i, Which At The Time Of Purchase...