I'ers rhymes with:
acquires, aspires, ayers, bryars, buyer's, buyers, buyers', byars, byers, byers', ceasefires, desires, doubtfire's, doubtfires, dryers, expires, fire's, fires, fliers, flyers, friars, fryers, grier's, hires, hyers, inquires, liars, meier's, meyer's, meyers, miers, myers, pliers, priors, pryor's, pyres, requires, smyers, spiers, squiers, squires, stiers, styers, supplier's, suppliers, suppliers', swyers, syers, tires, transpires, viars, wires, wyers
I'ers sounds like:
ihrig, ihrke, ira's, iraq, iraq's, iraqi, iraqi's, iraqis, iras, irick, iris, irises, irish, irk, irks, iroquois, iwerks