The last motorcycle I replaced the tires on was a 2005 KLR650 Kawasaki dual sport. I got lucky, or maybe the, what we used to call trials universal tires, aren't as critical. I replaced both and test rode the bike up to 70mph or so, with no sign of any balance problems. By the way, I spooned a set of Duro brand tires, which were very reasonable in price, and seemed to handle and wear well.