I recently put on some 35x15.5x15 swampers...they are used and by used I mean USED...they are pretty much down to the wear bar...anyways my question is, I didnt get them balanced when I had les schwab install them, (actually there recommendation) and now they vibrate like nobodys business!!! Im talking it gets scary at like 40+mph....so I go back thinking well better spend the 60 bucks to have em balanced, and the guy there says its not gonna do any good...thats just how swampers that big are....now is that true?? or why would he not want my money even if it where a waste?? My girlfriend has me thinking they want them to run crappy so I'll hate the tires so much I'll wanna buy new tires soon from them. So I need some advise should I just lay down the 60 bucks and get em balanced...which is actually what I paid for all 4 anyways. Or is that just the way swampers are?? Any help PLEASE, Im getting desprate...nay be shelling out the 500 soon for new tires...sooner than expected.