Anyone ever have a tire not seat properly on bead no matter what??

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4/26/2019 10:45 AM

Ok some info up front:
-I've been changing my own tires since riding mini bikes so I'm competent with the process
-I've used mostly Dunlop for decades, never ever had an issue
-The wheel in question is a good condition Excel a60 rim

This is my first time mounting mx33 Dunlops and I am using the stock size rear on a 19" wheel. Excel A60 rims that are straight, no issues. There is a spot on each side where the tire slips off the bead into the center of the rim. I tried taking the core out of the tube and resetting the tire like 50 times and nothing works. I finally got it to sit properly and let it sit over night with 45psi in it. Went on my second ride last night and it went back to the same issue once I started riding with 13psi in it. WTF

Got these from Rocky Mountain so I'm going to call them and see if they'll give me another.

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4/26/2019 11:20 AM

Sounds like maybe you got a bad tire? Defective bead maybe? Seems strange

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4/26/2019 12:07 PM

I have had a few Dunlop tires do that. No matter what I tried, they wouldn't seat. I have actually started using different brands because of it. Like you, I have changed my share of tires so it's not from lack of knowing how.

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4/26/2019 2:43 PM

Yeah bad tyre. Rarely, I get a tyre that won’t bead out when mounting, but a few corners in riding it will seat.
Had it with mtb tyres. Maxxis had a period of funky tyres years ago that were faulty.

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4/26/2019 7:23 PM
Edited Date/Time: 4/26/2019 7:24 PM

Funny enough I just had an issue with a MX33 on an A60 rim (rear "19). The thing was a pain in the ass to get the bead to seat. It took a bunch of soap and 60psi to get it to "pop" and then things were good. Never had this issue before though

I have about 4 rides on my A60s, so part of me thinks it's the rim design not being as forgiving with tires. Ran nothing but MX3s/MX33s on my old Tusk rims... never a problem then.

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James

4/30/2019 12:19 PM

[url=https://moparessentialtools.com/item-detail.aspx?itemId=49230152&part_number=HUNRP6-3784&type=equipment]

Hunter Tire Paste makes it really easy for mounting and seating. Just use a sponge and wipe down the beads and you're good to go. The pail will most likely last a lifetime if you just using it for personal tires. Keep the lid on when not in use so it doesn't dry out.

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4/30/2019 12:26 PM

SoCalMX70 wrote:

Funny enough I just had an issue with a MX33 on an A60 rim (rear "19). The thing was a pain in the ass to get the bead to ...more

Ya crazy, I've mounted several Bridgestone and other Dunlops on several sets of A60 rims without issue (never mx33 before though).

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4/30/2019 1:09 PM

The husky 125 comes with the wider back rim from the bigger bikes. I tried to mount a new mx33 last night, it was a real bitch and I scratched up the rims quite bad. I used wd40 on the bead and went to 60psi to get it seated.

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4/30/2019 1:09 PM

The mx33 asa the 19/100 going on the wider 2.15 rim btw

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4/30/2019 6:39 PM

Tube may be pinched . Had one that would not bead. Broke it back down ,and the tube had been pinched between the rim and tire. Did not leak air, just would not bead.

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5/3/2019 3:35 AM

MX33’s take a lot of air to bead. Use tire paste while mounting. Sometimes you can break it back down and rotated it a bit on the wheel.

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5/3/2019 5:26 PM

Tried another time using approx 60psi and it seems to be seated. Next ride will be the test I guess

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5/5/2019 3:10 PM

Well follow up, 65 frickin psi did it. Rode today and tire stayed on the rim! Photo

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