Rear Wheel mess
 

I needed to air up my rear wheels and proceeded to get a bath when I put the air chuck on the valve stem. I do believe the OP may have filled them with calcium or some such liquid. My question is how much of a mess am I going to have when I replace the tires? I have heard horror stories about what calcium does to the rims. It will be upsetting to find out that the inside part of the rim is all hogged up from this, because the exterior is in good shape sans some surface rust.

Pull the valve stem and lay them down so it drains out, calcium does some nasty stuff to steel but they should be tubed so unless theres a leak you should be ok. When you get the tires off the wheels make sure you wash them good to remove an trace of the calcium.

I'd try to capture the fluid and put it back in (depending on what the fluid is) after the tire change. I always use tubes with fluid.

Im not 100% sure there is a tube in them, the tire says tubeless and the valve stem is that of a tubeless tire ie. the bulge at the bottom where is seals against the rim. I don't know how long this crap has been in there, so god knows what I am going to see.

You can use windshield washer fluid, antifreeze and rim guard tubeless. If there isnt a tube i doubt its calcium because you wouldn't have a wheel left, what color is it and what does it smell like?

it was clear and there wasn't much of a smell to it. If I had to say it smelled like stagnant water.

It may be water.......

That sounds like calcium, its whiteish/clear and really doesnt have much smell. Id get your tires apart asap just to be on the safe side.

Id hope not, they would be solid blocks of ice in the winter.

Wouldn't be the first time I've seen it. :bigeyes: