
23 Jan 2016
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Registered Users
Veteran HUBBer
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Join Date: Apr 2005
Location: Oxford UK
Posts: 2,120
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Quote:
Originally Posted by mollydog
That technique may work on soft Knobby tires on dirt bike rims, but on other rims with safety beads ... running stiffer, road oriented tires, it's not going to work. (God knows I've tried it!)
21" front tires practically fall off the rim on a dirt bike rim like your KTM. Looked like the soft knobby on there was already broken by the time you'd stopped.
A 17" rear wheel with a knurled safety bead like the DID wheels used on DR650 and other bikes, can be extremely tough to break the bead. Once broken, spooning tire OFF back ON is not the hard part (for me).
The hard part is initially breaking the bead on the stiff rear street tire. I've even seen Tire pros at shops struggle with these using the No Mar tire changer.
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Breaking the bead can be next to impossible on some tyre / rim combinations. The Michelin Desert + Excel rim on the back of my CCM took me a day and a half just to break the bead last time I changed it - and that was in my garage. I came very close to taking an angle grinder to it. There's no way at all it would come off at the side of the road with one person and two 8" levers. And it's not just lack of experience - I've been changing my own tyres for 40yrs and can do "normal" ones in about 20-30 mins.
The worst part is it now needs changing again .....
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