Get your wheels balanced? What tires you are using?
Get all your wheels balanced
And alignment too
Yokohama AspecA300 (5900) .You can also consult there is a complete thread on tyres selection I think it"I am Tyre Guru"
yoko is best among these. and get wheel balanced by some specialist.
Yokohama Aspec A300 is the best. 175/70R13. Do check the manufactured date before buying the set.