1998 Dodge Avenger

When doing 50+ there is a rubbing vibration passenger side wheel well area, 60-70 is really scary sounds ands feels like something is going break anytime. Everything with steering seems to be fine. Already changed cv axle and lower ball joint on that side. Was going to replace wheel bearing, but come to the conclusion that is something else. While at higher speeds, letting off throttle completly and letting rpms go all the way down everything smoothes out while still at high speeds, the rubbing noise and vibration goes away, and soon as you get back on the throttle alittle bit, it comes back, the harder on throttle, the harder the rubbing. Almost seems like its in the transmission, maybe a gear or something. Has been a good around town car but can not drive on the interstate. This car has been doing this for 2 years, any suggestions would be considered thanks