screws will rip out instantly....not worth it....you should always stud new or near new tires and use the longest ice screws available (Kold Kutter, Pro Gold)....something you can do....(should be on newer tires)....is place a liner on the inside using either old tires(like the ones on your quad), or bailer belts sold at your normal farm supply store...then use 3/4 to 1" ice screws and screw through the lug and into the liner....most of the time slime is not needed but isn't bad to add. This adds some support to the studs and a set of tires will last years...if only driven on ice. Sounds like overkill I know but if you use the short sheet metal screws the first time you blip the throttle there are going be a cloud of shrapnel flying from the rear of your quad.
