Goodyear Dunlop Tires Europe BV announced Tuesday (4/7/00) that it is to cut one-third of its workforce at Dunlop France`s Montlucon tire plant. The site, which makes tires for scooters, trucks and agricultural vehicles, became part of the Ohio-based Goodyear Tire & Rubber Co (GT) Group after it struck an alliance with Sumitomo, of Japan, last September.