Taking my bike out of my basement storage and noticed a pool of clear liquid at the base of each tire. Didn’t notice it at first, but it’s pretty much clear, felt oily/tacky to touch, no smell. Picture taken when I realized, but certain that part was where the tire was contacting the ground.
Running GP5000s, 2 yrs old, with Stans sealant.
Could it be the sealant weeping out? Or is it hydraulics? The brake lines didn’t appear to be leaking, and don’t feel spongy.
by adikenobi
8 Comments
Well your description matches mineral oil from brakes. Maybe it leaked out of the pistons so the seal is hard to find? I don’t know much about tubeless though, so I can’t comment on it it’s sealant.
I’m gonna say mineral oil. Probably leaked forever ago
Let’s see a close up of the caliper. Usually sealant is white, pink or orange. Mineral oil is clear or red depending on the brand. Oh also sometime clear green.
Did you KOM?
My fat bike sits most of the year with Stan’s sealant and it leaks a fluid out of the tires exactly like you’re describing. I would bet on the tires weeping sealant.
Its oil, SRAM and Shimano oils are both noticeably red. This doesn’t look like either of those. It looks clear in the photo, SRAM and Shimano hydraulic fluids are both noticeable red. It looks like it dripped onto the top of the tire, and then down to the rim. A caliper would not be capable of doing that. Maybe a lever, but it would be all over the handle bars. What do you keep above your bike ?
Sealant is leaking. Sounds like Stans. It starts out white but becomes clear with age.
Probably sealant I would bet. Not always possible but I often take a couple minutes a week to just spin the wheels on my bikes for like 30 seconds each to keep the sealant moving.