Welp, spent almost 30mins on cleaning 1 tire (I used rubberized garden gloves as it has texture). Sealant residue is about 2 years old and just kept topping up
Also need to clean the gunk off the valves
The result was almost 30g of dried sealant (some on the floor), let’s call it extra 60g on your tires
Don’t be like me, just a PSA
You got rid of all your built up flat protection! IME, the more layers of dried sealant the better the flat protection.
I have cleaned the inside of a tire exactly twice and will never do it again. Now, I use them until the tire is worn out and then toss the whole thing.
The first tire I cleaned was a gravel tire. After putting in new sealant I had literally 30 holes to be resealed.
The second tire I cleaned was a road tire. That went fine but, in the end, I concluded that it was kind of a waste of time.
Yeah. Not something I routinely do. If I take a tire off for some other reason and it’s got a lot of buildup, I’ll remove most of it using a stiff brush and running water. FWIW: CO2 creates carbonic acid that can start to neutralize the ammonia that keeps many sealants from congealing resulting in more buildup and Stanimals. I don’t generally use CO2 anyway, but it’s worth noting for those who do.
I just wear out the tire and start over. I’m not removing sealant.
Definitely need to clean it out if you’re switching to the new Silca sealant.
Dang how long do you keep tires for?
I mostly train indoors with little outdoor unfortunately, so long.
I’m tempted to try it, haven’t had issues with Stan’s and Orange Seal so cost comes into play here
Same.
But even then it isn’t always just that simple as ride more. I checked my tires weekly over the winter like a month ago boom rear is completely flat. Put some air in it, hour later flat. The sealant is now pooled and dried on the bottom, fun.
I checked my tires in March and it was still liquid - cue getting a giant gash in April only to realize it had turned solid and I ended up making a call to my wife because I didn’t want to monkey with a tube and I was only a few miles from home.
I recommend some plug system - dynaplug, stans dart, whatever. A couple of minutes later, you can be on your way. I see a tube as an absolutely last ditch effort and then you may have some tiny thorns in your tire tread from previous flats so you have to think about that.
I’m going with foam inserts on my next set of wheels/tires with the idea that they can still get me home.
I’ve found that old sealant can sometimes be watery. I do a big top up with fresh sealant at the start of the season and then do monthly smaller top ups all season.
I clear out the liquid sealant which tends to have got a bit watery but don’t bother getting rid of the dried up stuff.
I figure the weight of the dried sealant is offset by the weight loss due to tyre wear.
I’m lazy 
How are you making a tyre last more than one season?!
60g. Hmmm.
I don’t even refill after the winter and everything’s just fine.
If you switch out tires a lot, I find that the sealant build up on the bead can prevent it from seating/sealing when mounting. So, while I don’t totally clear the insides, I do make a habit of cleaning up the bead when removing a tire before packing it away. It’s a lot easier to remove the sealant it when removing the tire it vs. when putting it back on (after the sealant has hardened).
Hmm… not sure that’s worth the time saving.
I just did mine after getting the summer road bike out and one tyre was completely dry, the other was a bit watery but might have been ok.
Both held air perfectly fine but I prefer the piece of mind knowing I’d survive a puncture.
The solution is to ride your bike more so the tyres don’t last 2 years.
100% - no idea how anyone has tyres that last more than one season!
I’ve just put my summer wheels back on the bike and they were still seated so I just topped the selant up. If the old sealant has hardened it’s just another p’ture belt, I’d rather have the fast no mess set up from just refilling , and Id save cleaning out for the times I’ve changed sealant brand.
