As you found out, bias ply tires 'grow' in diameter with speed of the tire. Rocky found out with his when he was playing with these different bias plied tires here:
Just mounted it last night at about 10 pm. haven't even taken is off the jacks yet. I did a search and found some good minfo about elongating the forward front rear fender mounting holes. Think I will try this.
Just took my third one off, never a rubbing problem and I have been using a 140/70 not a 130/70. Hack is hard on tires and the bigger tire gave better mileage. Don't suggest anyone try it on a non hack bike.
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