BMW Williams went into the 2001 season with renewed major sponsorships such as Allianz, Nortel Networks, Compaq, Reuters, Veltins, Petrobras and Castrol. BMW Williams received new sponsorship such as WorldCom and discontinued sponsorships are 11880.com. The livery was similar to the 2000 design with subtle changes. In free practice ahead of the 2001 San Marino Grand Prix, Williams jokingly painted their rear wing with a text saying "Keep Your Distance!" after several rear-end shunts in the opening races, most notably by Jos Verstappen on Montoya whilst leading in Brazil.