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Continental tyres “welded” to rims!

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  • March 29, 2018 at 10:46 am #28300
    wadesnj

    Continental Gator Hardshell 700 x 28c on Shimano R500 rims. Trying to change the tyres for a new set of same, can’t get the old ones off! Using standard short steel levers, but can’t get under the bead, scared I’ll damage the rims if I go for brute force and ignorance. Any suggestions? They seem extremely well stuck to the rims. 

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  • March 30, 2018 at 11:08 am #915703
    0
    sergius

    CXR94Di2 wrote:

    CXR94Di2 wrote:
    Easy to get off, get a pair of pipe grips, nip tyre just above rim, squeeze. This will break any bond has to rim, repeat around wheel

     

    Hmm never thought of trying that.  Though I can’t say I’ll be adding pipe grips to my saddle bag any time soon 😀

    March 30, 2018 at 7:39 am #915701
    0
    CXR94Di2

    Easy to get off, get a pair
    Easy to get off, get a pair of pipe grips, nip tyre just above rim, squeeze. This will break any bond has to rim, repeat around wheel

    March 30, 2018 at 5:58 am #915699
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    ibr17xvii

    I have some of these in 25’s

    I have some of these in 25’s on my winter bike & they are a pig to get on & off. Hoping I wouldn’t have to do it that much as they are supposed to be hard to puncture. Only had 1 so far & it took me a lot longer than it should, not what you want at the roadside.

    Although after I slid out & came off yesterday might be looking for something with considerably more grip……… 

    March 29, 2018 at 8:37 pm #915697
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    huntswheelers

    changed some today for a

    changed some today for a customer…. hateful tyre…   I find you need to squeeze the bead around the rim to unhook it…. then using plastic levers (I use the wide B’twin ones on these tyres and Marathon/Plus) you can ease under the bead and the job is done…

    March 29, 2018 at 3:37 pm #915695
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    StraelGuy

    How about clamping both sides

    How about clamping both sides of the tyre with a set of mole grips as close to the rim as you can and then pulling the mole grips back over one side of the rim? That should unseat the bead on the opposite side.

    March 29, 2018 at 3:04 pm #915693
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    Boatsie

    The thick plastic levers from
    The thick plastic levers from the LBS do jobs okay here. Plastic against rims yet although thick the initial bite into the bead is sharp and angled. Hence should get in without damaging. Contoured cross section interlocks them when not in use and provides strength when used as a lever.
    I bought 2 sets; different brands yet same priority to use, both cost about $5 per 3.

    March 29, 2018 at 2:45 pm #915691
    0
    sergius

    I’ve had similar at the

    I’ve had similar at the roadside, the issue is you need to get the bead into the channel which runs around the middle of the rim.

    I had some GP4000sii which wouldn’t unseat from the hook, so I couldn’t move them to the centre channel.  In the end it took two men and park tools tyre lever with a much thinner end than my levers to unseat the bead from the hook.

    At home, a screwdriver, wrapped in a old t-shirt would likely do the trick without damaging the rim.

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