They appear to possibly need new cam chains at about 125,000 miles. I know of many that have over 100,000 miles. The important part of getting a higher mileage bike is the service history. If scheduled maintenance has been done, chances are you'll get another 60,000 mile on the bike with no major expense. It may be time for new wheel, steering stem and suspension link bearings though so check those for rust or roughness.