Haslimann won a three-way pitch for the brief against fellow Birmingham agency HROC and ten-year incumbent McCann-Erickson Public Relations.
The tyre giant repitched the work following the decision to rethink the group's UK PR strategy - prompted by the merger of Goodyear and Dunlop across the UK and Europe.
McCann formerly handled UK PR for Dunlop, while Goodyear used Hill & Knowlton for ad hoc project work on a pan-European basis. It is understood H&K may continue on an ad hoc project basis.
GD corporate comms manager James Bailey said: 'From a PR point of view, the communications brief has changed dramatically. Goodyear and Dunlop have 100 years of history in the West Midlands but this is the first time the outside world will know of them as a joint organisation, so the brief is to position GD as a corporation and market the two brands separately to the end user.'
Haslimann will target a wide range of users, from farmers and truck fleet operators to motor cyclists and car drivers.
Account director Andrew Rastall leads a team of five on the brief, reporting to Bailey. He said the work would encompass B2B, B2C and some regional community relations work on the corporate side.
Haslimann will also use PR to leverage GD's event sponsorship, for example the Land Rover G4 Challenge.
Bailey said the merger of Goodyear and Dunlop - which saw the two brands co-locate in Birmingham last September - also led to an in-house restructure of the marketing function.
The division is now structured with Bailey heading overall corporate comms, Ron Pike and Geraldine McGovern acting as brand comms managers for Goodyear and Dunlop respectively, alongside marketing managers for individual business units.