Originally Posted by wantboost
or is it barely noticeable... i am using 5.5T brushless setup with lipo
Of course they make a difference; they change your setup. A larger offset will make the track width wider. Same as adding wheel spacers. As for how that will effect handling, you should consult a setup guide.
*edit: The Hudy setup guide says that increasing front and rear track width will cause a substantial increase in understeer...