A friend and I ordered some Continental Conti Go tires for our older bikes. We put his tires on today. When we balanced them the front took a minimal amount of weight. But the rear tire took a ton of weight. Yes we had the yellow dot at the valve stem, should be the lightest part of the tire. I was really surprised about the amount of weight on the rear tire. about 4oz or more. I've never had a tire that took even half that much on any of my bikes. I thought Continentals were supposed to be good tires.? Now on the sidewall they were marked "Made in Korea" which surprised me also. Does that explain poor tire construction, balance or other wise? Anybody else with Continental tires using alot of weight? Or had any problems with Continentals. All my other tires were Dunlops and they balance with very little to no weight. Am I spoiled?
I've always theorized that the valve stem is lighter than the material removed from the rim for the valve stem "hole". Using my theory, the yellow dot is the "heavy" spot on the tire. I could be wrong. Anyway, balance the rim without the tire and find out where the lightest/heaviest spot is and permanently mark it. Then put the tire on and rotate it until the yellow dot lines up with your mark. This should reduce the weight needed to balance the tire.
Good idea. To late now for Tim, tires are on unless he wants to take it off and try again. We didn't have time yesterday. I did check my rims years ago for balance and they were about spot on.
