what could cause a wiggle in steering wheel at a slow speed on 1994 Buick LeSabre

notice a wiggle when starting out under 40 miles an hour

Asked by for the 1994 Buick LeSabre
Poss. tire out of round have tires checked.
ty for answer, kit a block of wood on freeway going 70...thats when i notice it.
Also make sure the rim didn't get bent.
ty had tires fill today and no more wiggle.