Trying to get a '74 850 with unknown history roadworthy. I looked last night and didn't see any markings on the rims. Front and rear do look the same though. They don't look rebuilt (or "relaced") either. May be original. New looking Avon on the rear. Weather checked Dunlop on front. Maybe I just missed a marking on the rim -- so the question is, are all rims marked? And for good handling road tires, front and back, what Avons are reccomended? Not racing (and not always cruising like on a Harley either), but want good handling. And last, but not least, are all inner tubes created equal?