Bead seating question (tubed)

[whynot]

I'm putting Kenda K270s on the DR350, rear is all set, and yesterday I got the front tire mounted and balanced, but now there's a hop, it looks to me like the bead is not popping in one section. I used lots of powder inside the tire and on the tube (new IRC) and soapy water on the beads. Usually I don't like to use more than 45 PSI, but did go to 55 once, and inflated/deflated it about 6 times. And left it over night at 45 PSI, but it's still hopping this morning.

What maximum PSI is safe to use?

This morning I'll try again lubing the beads again thoroughly. It could be a defect in the tire, I suppose, but I'm not ready to start a return, it took 3 weeks for these to arrive from Bike Bandit. I'm just happy that I didn't pinch the tube. I used to be good at this, this is the first one I've done in years, though.

Suggestions appreciated ...

[gregp]

You may have the tube trapped between the tire and the rim, so be careful. I have long used WD-40 for mounting tires. It helps things slide smoothly into place and when you let it set for 24 hours it kind of bonds the tire to the rim.


Sent from my iPhone using Tapatalk

[whynot]

You may have the tube trapped between the tire and the rim, so be careful. I have long used WD-40 for mounting tires. It helps things slide smoothly into place and when you let it set for 24 hours it kind of bonds the tire to the rim.


Sent from my iPhone using Tapatalk

Thanks. I did press the valve stem all the way flush with the rim before re-inflating, which usually clears the tube from the bead and rim, will take a closer look and do it again, liberally lubed.

[Kurlon]

Get some Ru Glyde from NAPA, best tire lube you'll find. Get the tire as warm as you can, lube the beads on both it and the rim and then give it all the air as quickly as possible.

[whynot]

Get some Ru Glyde from NAPA, best tire lube you'll find. Get the tire as warm as you can, lube the beads on both it and the rim and then give it all the air as quickly as possible.

Thanks. The sun is hitting the garage now, so I'll get the wheel out and warm it. Plus maybe the hair dryer ... and lube, and re-inflate, over and over again ...

[e30addict]

Warm tire, slippery lube and lots of air (volume/not pressure) has always worked great for me. My compressor is set for 90 and I just hit it until the bead pops. I've never worried about how much pressure was there.

[Paul_E_D]

FWIW, I almost never here my beads pop on the dirt tire swaps. I just visually check that they close to evenly seated around the rim. I think they seat all the way quickly once you ride a little

[SRTie4k]

You're probably safe to hit it with 80-90psi just temporarily enough to seat the bead. Done that a few times without issue on stubborn/stiff tires.

[whynot]

You're probably safe to hit it with 80-90psi just temporarily enough to seat the bead. Done that a few times without issue on stubborn/stiff tires.

Thanks, it's sitting in the sun now at 60PSI after 4 inflations, lubed, warmed with sun and heat gun on low. Seems better. Will let is bake for a while and check again. Maybe try more air with a blast blanket in place and wearing ATT.

[whynot]

FWIW, I almost never here my beads pop on the dirt tire swaps. I just visually check that they close to evenly seated around the rim. I think they seat all the way quickly once you ride a little

Thanks. Yep, that's what we used to say back in ye olden days, ride it a while over-inflated to seat fully.

[nick5446]

You're good with more air. As others have stated, 80+ is no big deal. If I have a particularly stubborn one, as you do, I generally inflate it pretty high (80-100) and let it sit in the sun for a while, and sometimes hit it with a hammer.

I'd be shocked if it was an issue with the tire. Let it simmer and try not to get frustrated.

[Stoneman]

No experience with tubed tires, but as others have said I use 90psi with the valve removed from the valve stem.

[whynot]

Full sun forecast for tomorrow, will give it another go. Planning to change the fork oil, too. And waiting on a title issue [frown]. So it's not like I could be riding it.

[whynot]

Success [happy face]

... Get the tire as warm as you can ...

All it took was heat. This morning I brought the wheel & tire into the house and parked it near a big steam radiator for 7 hours, then back out to the garage, deflate all the way, break and lube both beads, inflate quickly to 65psi -- all good. I didn't want to go any higher on a $50 21" Kenda, I'm not confident that the bead would stay on the rim. Now set at 45 psi and back in the house. Thanks for a good discussion. [thumbsup]

[PeaPod]

I had a similar problem this year. I had some luck slowly inflating the tube and paying attention to the tire as it set on the bead. If a spot didn't seem to be moving over the lip so well, I would spin the rim and place my weight on it where the bead was not setting, this would help push the tire over the lip. Ultimately, I think it was a combo of the aforementioned process and liberal use of RU Glyde.