I'm doing a trip to Portugal in a couple of weeks and my rear tyre won't get me there and back, 3mm left on a TKC80. I was just trying to decide whether to change the tyre before I go and get it fitted/balanced professionally, or whether to strap a tyre to pillion and change by hand when I get there. I'll be staying on a farm about 50kms from the nearest tyre dealer, so getting it fitted & balanced professionally whilst I'm there isn't an option.
The front has 6-7mm left on it and was professionally fitted an balanced, so that should still have life left in it for the return trip.
The rear was professionally fitted and balanced, but with new rubber if there is a significant imbalance it will be on a different spot on the tyre, so that means nothing.
I guess another question would be, if you take the chain off the rear sprocket so nothing is holding the wheel still, can you balance the wheel on the bike, or will the wheel not turn freely enough on it's wheel bearings, for the heavy spot to rotate to the bottom and expose the imbalance?
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