[K4izen]

I recently gained the courage to work on my tyres and wheels with something really basic. I was leaking air out of my rear valve, so I decided to replace it along with the front one (for vanity purposes so it matches). In the process, I decided to top up the sealant, something that I have not yet done in over a year. I did a brief inspection of the tape, looked to be in good condition. I also inspected the valve openings, seems solid, no issues. So upon replacing both valves (presta) and cores, topped up with sealant, I proceeded to use my floor pump to pump them both up. Seemed fine, two to three scary loud pops, bounced it around, rolled it to spread the sealant. Left it overnight, holds pressure. Here are my questions:

1. The sealant on both tyres are leaking on the tyre wall, is this normal? Does this mean I should be re-applying sealant again and perhaps replace the tubeless tape?

2. I rode the bike for three days with no issues, up until the fourth day, yesterday, I suffered a puncture that the sealant failed to stop. The sealant I used was brand new unopened, called Orange Seal. However, this was sitting in my garage cupboard for two years. Do sealants have a due by date? I made sure I shook it very hard and thorough before applying it.

So I've now got a flat rear tyre. Planning to try some Big Bettys up back and Magic Mary's up front

3. Should I buy new tape and reapply?

4. Muc-Off seems like a good product, would I likely face issues with using this product?

Thank you for your time.

 

[Steel-Onions]

With my limited experience, leaking at the 'sidewall' i guess you mean the bead/rim edge? sounds like the bead is not fully seated all the way around, I would let it down and break the bead seal then re-inflate upto 40 psi and bounce and rotate the tyre and check that the line near the bead is equally exposed all the way around the edge of the rim, then deflate to the required pressure(hope that makes sense) and i have had just fine results using muc-off sealant, good luck

 

[K4izen]

With my limited experience, leaking at the 'sidewall' i guess you mean the bead/rim edge? sounds like the bead is not fully seated all the way around, I would let it down and break the bead seal then re-inflate upto 40 psi and bounce and rotate the tyre and check that the line near the bead is equally exposed all the way around the edge of the rim, then deflate to the required pressure(hope that makes sense) and i have had just fine results using muc-off sealant, good luck

Thanks you so much. Yeah that makes sense!


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[K4izen]

Just a quick update: I removed both tyres (both about to be sold), removed existing tape, and bought myself a muc-off tubless kit with includes sealant, rim tape, and a set of tubeless valves (I didn't need but kept as spare). I cleaned the wheels and replaced both tyres with 2.4 Schwalbe Magic Mary's 2.4 front and back with Super Gravity casing (best I could find). Process went smoothly and haven't had any sidewall leaks like I did with the Maxxis tyres. It's only been two days, gave it a very quick ride so help it seat and I will be giving it a proper ride this weekend.