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I pumped a new tube to about 80 psi (I missed that on the casing the recommended pressure is 100 psi). On the ride immediatly, I hit a very small kerb harder than I wished and after I noticed that my ride was bumpier than usual (though I couldnt say for sure if it's because of the kerb). Upon visual inspection, I notice that the casing doesn't go perfectly round (between the lowest point and the highest there seems to be maybe a 3-4 mm difference). The inner rim seems round enough but the whole wheel (back wheel) seems a bit wobbly.

I think it's not the rim that has issues. How can I check if I need to change the casing or the inner tube?

Thank you.

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  • @Blam fixed. Sorry not used to imperial units.
    – user3371583
    Mar 28, 2015 at 14:29
  • possible duplicate of What could cause an inflated tire to be "untrue" on a true rim
    – Daniel R Hicks
    Mar 28, 2015 at 18:04
  • Whole back wheel seems wobbly? If the wheel itself is wobbling, it is either not seated in the dropouts correctly, or you've got other problems which require you to take the wheel to a bike shop such as an untrue rim or something else.
    – Batman
    Mar 29, 2015 at 2:59
  • Hi OP - this question is old, and has no answer. Would you like to post and accept your own new answer describing how it has gone for you in the past 11 months? What did you do to fix the bumpity wheel?
    – Criggie ♦
    Feb 23, 2016 at 7:42
  • @Criggie Sorry. Well I still had a warranty on my wheels so I've changed them. They stopped being true I think. When rolled at high speed the wheel (without tubbing and tire) was very unstable. So what could I do with this question?
    – user3371583
    Feb 23, 2016 at 11:28

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OP said:

Well I still had a warranty on my wheels so I've changed them. They stopped being true I think. When rolled at high speed the wheel (without tubbing and tire) was very unstable.

Hooray for warranties! Remember, always keep your receipts, and don't procrastinate or the warranty window may close on you.

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