- Pink globules
What’s this that’s been oozing out and has solidified.
Retyrement!
Retyrement!
A few years old and being replaced.
What’s this that’s been oozing out and has solidified.
What’s this that’s been oozing out and has solidified.
Spa Audax Ti Ultegra; Genesis Equilibrium 853; Raleigh Record Ace 1983; “Raleigh Competition”, “Raleigh Gran Sport 1982”; “Allegro Special”, Bob Jackson tourer, Ridley alu step-through with Swytch front wheel; gravel bike from an MB Dronfield 531 frame.
Re: Retyrement!
Sealant? Is there more on the inside?
Muc-Off sealant is pink.
Jonathan
Muc-Off sealant is pink.
Jonathan
Re: Retyrement!
Is it the rim tape that degrading and liquefing. Yuk 
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway X2, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840 
Re: Retyrement!
Looks like Michelin Pro 4. I have some pretty old ones on a seldom used machine, talking about 6 years old or more, which have pink appearing in the sidewalls. No idea what it is. Never used a sealant of any sort and rim tapes are cloth, so this has to be something to do with the construction.
Re: Retyrement!
Me too!
Inner-tube use only.
Inner-tube use only.
Re: Retyrement!
It’s defo coming from the tyre itself - rim tape is intact and no sealants ever used.
Whenever anyone asks “should bin this tyre?” I always think they’ve answered their own question.
It’s got its share of nicks and scrapes, but the main tread seems pretty ok (highly scientific assessment feeling with finger and thumb with old and new).
Whenever anyone asks “should bin this tyre?” I always think they’ve answered their own question.
It’s got its share of nicks and scrapes, but the main tread seems pretty ok (highly scientific assessment feeling with finger and thumb with old and new).
Spa Audax Ti Ultegra; Genesis Equilibrium 853; Raleigh Record Ace 1983; “Raleigh Competition”, “Raleigh Gran Sport 1982”; “Allegro Special”, Bob Jackson tourer, Ridley alu step-through with Swytch front wheel; gravel bike from an MB Dronfield 531 frame.
Re: Retyrement!
"Apparently its not uncommon with these. Michelin has in the pasy (sic) responded that its a pre treatment sprayed onto the under layers before the final top layer is applied and vulcanized. If they get it wrong, too much is applied and can ooze out like this. Apparently only affects very small batches, and is nothing to worry about from their view, and anecdotal evidence from people who've had the same issue..."
"Quick google, some say it is a bonding sealant of the tyre construction"
Both from:
https://forum.bikehub.co.za/topic/18795 ... ink-stuff/
Jonathan
"Quick google, some say it is a bonding sealant of the tyre construction"
Both from:
https://forum.bikehub.co.za/topic/18795 ... ink-stuff/
Jonathan
Re: Retyrement!
Probably best to retyre them.....
Surpprised no one cracked that joke . !
Surpprised no one cracked that joke . !
Last edited by Jamesh on 21 Jul 2022, 9:07am, edited 2 times in total.
Re: Retyrement!
"They did, Oscar, they did."
: - )
Jonathan
: - )
Jonathan
Re: Retyrement!
I have had the same issue with a couple of Michelin tyres and rode them without any issue.Jdsk wrote: ↑20 Jul 2022, 5:55pm "Apparently its not uncommon with these. Michelin has in the pasy (sic) responded that its a pre treatment sprayed onto the under layers before the final top layer is applied and vulcanized. If they get it wrong, too much is applied and can ooze out like this. Apparently only affects very small batches, and is nothing to worry about from their view, and anecdotal evidence from people who've had the same issue..."
"Quick google, some say it is a bonding sealant of the tyre construction"
Both from:
https://forum.bikehub.co.za/topic/18795 ... ink-stuff/
Jonathan
Re: Retyrement!
What goes along the bottom of a river at 100mph?
A motorpike and sidecarp (living their two lives, perhaps, the hooners).
Cugel
“Practical men who believe themselves to be quite exempt from any intellectual influence are usually the slaves of some defunct economist”.
John Maynard Keynes
John Maynard Keynes