Stewart, who will be returning to the series this year, has already tested out a few Scorpion MX tires. Stewart said that he was impressed with the tires, but also the commitment from Pirelli.
Stewart said: "I was really impressed with the commitment that the guys at Pirelli (showed) during testing, including bringing engineers over from Italy. I am looking forward to the 2012 racing season."
Davi Millsaps, who will also be racing with the JGRMX Team, saidL
"Pirelli has been working really hard to develop for us the best possible tires. 2012 is going to be a great season."
Pirelli has won 56 world championships to date. The company is hoping to add to that total this year with Stewart and Millsaps riding Scorpion tres.