I put this in my tyres a while ago.
Put it in just in case I did get a puncture, not for the balancing as as the wheels were already balanced.
Haven't noticed anything different in the handling.
Just put it in for the extra peace of mind that if I did get a flat, it would give me more of chance if it sealed it rather that the tyre just going down.
Had flat tyres before and it's no joke, when they just go down.
It was easy to do.
I did put a couple of posts on here when I done it.
Had a few people saying why would you put it in, they would rather know if they had a flat and it was dangerous riding about on a sealed tyre.
I explained to them, I wouldn't ride about with a tyre just sealed with it, just that if it did seal a flat, surely it's better than your tyre just going flat on you.
And I've know tyres being driven about with a nail in them which haven't gone down straight away.
I said just check your tyres before or after a ride and if it has been sealed, get a new tyre.
Luckily I haven't had a flat, but if I do i hope it will help.