[kpicha]

Hi,

I just bought this bike, all components but the frame and tires are new. The wheels are Ibis Blackbird 35s with Continental Trail King tubeless tires. Should I be concerned about this wobble? What would cause this?

 

[Cleared2land]

I that just the tire, or is it the wheel that's not true?
I assume it's the tire.

 

[kpicha]

I that just the tire, or is it the wheel that's not true?
I assume it's the tire.

I hope its just the tire but I'm not sure how to tell which one is causing the problem.

 

[mountainly]

We're betting it's caused by the tire. Maxxis are known to wobble a bit too. It's a small wobble, we doubt you'll feel it on the ride. But if you're able to take it back to the shop, see if they can remount or replace the tubeless tire.

 

[kpicha]

We're betting it's caused by the tire. Maxxis are known to wobble a bit too. It's a small wobble, we doubt you'll feel it on the ride. But if you're able to take it back to the shop, see if they can remount or replace the tubeless tire.

Took it out only on two rides and you're right, I didn't feel it but I do wonder if it would affect braking.

 

[Cleared2land]

If it is the tire, and I bet that it is, then it shouldn't affect anything other than having to look at wobble and wishing you had returned it for a warranty replacement.

It's easy to determine in its the wheel by just observing the rim as you spin the tire and watch the rim where the wobble is. If your rim is true,it's the tire.

 

[JSGN]

Make sure its seated properly. It might just be that the tire havent popped onto the rim properly. Look for the thin line around the edge of the rim to make sure.

 

[kpicha]

Make sure its seated properly. It might just be that the tire havent popped onto the rim properly. Look for the thin line around the edge of the rim to make sure.

If it is the tire, and I bet that it is, then it shouldn't affect anything other than having to look at wobble and wishing you had returned it for a warranty replacement.

It's easy to determine in its the wheel by just observing the rim as you spin the tire and watch the rim where the wobble is. If your rim is true,it's the tire.

I'm pretty sure, at this point, its the tire. I've checked all your suggestions and thankfully, it doesn't seem to be the rim. Its kind of weird, though, that it only wobbles every other rotation; like there's something inside the wheel besides the sealant but I don't hear anything. Oh well, I can live with it.

 

[JSGN]

I'm pretty sure, at this point, its the tire. I've checked all your suggestions and thankfully, it doesn't seem to be the rim. Its kind of weird, though, that it only wobbles every other rotation; like there's something inside the wheel besides the sealant but I don't hear anything. Oh well, I can live with it.

Sometimes tires are uneven, might help to remove the air and move the tire on the rim abit and try it again. Another think is to remove the tire and spin the rim and check for wobble.

 

[LVLBTY]

I can almost guarantee that tire isn't seated on the rim correctly causing the wobble. Remount it with ample soapy water so it seats better, the wobble should go away. And as somebody else said, look at the line at the bead, you can clearly see if it's level with the rim or it varies up and down, that indicates the tire isn't seated correctly.

 

[mountainly]

Took it out only on two rides and you're right, I didn't feel it but I do wonder if it would affect braking.

You should be good!

 

[Cleared2land]

I have seen this type of wobble on tires that have burped or were overinflated and blew off of the rim.

 

[kpicha]

Sometimes tires are uneven, might help to remove the air and move the tire on the rim abit and try it again. Another think is to remove the tire and spin the rim and check for wobble.

Wouldn't that unseat the ba

I have seen this type of wobble on tires that have burped or were overinflated and blew off of the rim.

Oh really? Hmm, does the tire just need to be re-seated or is it permanent?

 

[Cleared2land]

Oh really? Hmm, does the tire just need to be re-seated or is it permanent?

I think that would best be judged on a case by case basis, but my few personal observations, it was permanent. My burped tire was never straight and I have seen 2 others that were over inflated and blew off the rim and they were worse than mine.

I tried to mount mine every imaginable way. Leave it for multiple days, in the sun at max allowable pressure and no joy. YMMV

 

[kpicha]

I think that would best be judged on a case by case basis, but my few personal observations, it was permanent. My burped tire was never straight and I have seen 2 others that were over inflated and blew off the rim and they were worse than mine.

I tried to mount mine every imaginable way. Leave it for multiple days, in the sun at max allowable pressure and no joy. YMMV

I'm glad you mentioned that b/c that's what was in the back of my head but I'd only seen it happen once before so, I didn't really think that's what it was. But, that wobble really does remind me of the one I saw and I have no idea what the previous owner did. I did re-seat it but its still there. Oh well.

 

[smashysmashy]

Continental is notorious for this. Such poor quality. I've bought 4 conti mountain tires in the last 5 or 6 years and 3 had bad casting wobbles (race king and trail king sl)

You should 100% get this replaced under warranty. If the tire rolls smooth, it might not matter, but they should replace it.

 

[kpicha]

Continental is notorious for this. Such poor quality. I've bought 4 conti mountain tires in the last 5 or 6 years and 3 had bad casting wobbles (race king and trail king sl)

You should 100% get this replaced under warranty. If the tire rolls smooth, it might not matter, but they should replace it.

Good grief, that's awful! I have the Trail Kings on right now but, I sent an email just in case. I don't expect anything, though so, we'll see. For the two rides I did, they seem to be really good tires for where I ride.

 

[Brodybro29]

This tire should be warrantied. If the bike comes from a shop, they should (must) have seen it...

 

[Harold]

If you see the little rubber line next to the bead consistently around the circumference of the wheel on both sides (seeing that little line move relative to the rim would be indicative of the bead not being completely seated) and it still wobbles like that, yeah, it's a permanent defect.

Brand new tires occasionally come this way, as they've slipped through QC at the factory. used tires can become that way after a burp or blowoff or other traumatic impact. thankfully it's been awhile since I've had one, but the last one I did have was a Continental, and it was like this out of the box (it's been a decade+ since I last used conti tires, so it's not a new phenomenon).

 

[FIF]

FWIW - A quick way to make sure it's not the rim is to set the bike upside down so the bike is stable, then use a piece of painters tape to stick a toothpick to the fork stanchion or seatstay so that the toothpick bridges the gap between the bike and the side of the rim. When you spin the wheel, you can adjust the position of the toothpick so it acts a bit like the bumper does on a truing stand. Good luck!