Did you ride a few miles and check the lugs when you put the wheels on?
Aluminum wheels whether it be on an atv or truck/car, need time to seat if they are new. You get them mounted then ride a few miles and check them. Also make sure and use a torque wrench to get all the lugs the same. The first time you tighten lugs on a new wheel, the aluminum on the taper part of the wheel will compress a little this sometimes will let the lug loosen while your riding. If I have had my wheels off, the very next ride I go on I check my wheels several times during the day just to be on the safe side.
Aluminum wheels whether it be on an atv or truck/car, need time to seat if they are new. You get them mounted then ride a few miles and check them. Also make sure and use a torque wrench to get all the lugs the same. The first time you tighten lugs on a new wheel, the aluminum on the taper part of the wheel will compress a little this sometimes will let the lug loosen while your riding. If I have had my wheels off, the very next ride I go on I check my wheels several times during the day just to be on the safe side.