…technical obstacles, we almost always had better success on the WR250F than we did with our 2009 WR450F test bike. Low amounts of wheelspin makes the 250 a perfect match for a trials tire and we spent much of our testing with a Pirelli MT 43 Pro Trials tire spooned on the rear (see sidebar). One thing…

…in Southern California at Hungry Valley State Vehicular Recreation Area. After breakfast and a short Power Point presentation, Yamaha pointed to a 250 and a 450 and said, ""Go play."" MCUSA's Kevin Duke and I wasted no time in hitting the trails for some photos, video footage, and seat time on the new…