Originally Posted by
maddog34
if that green slop gets into your pump, it may Ruin your pump... the Valve will eventually clog up, and then you can't get the faulty valve out, without a struggle.
the extremely thick tube material will make the tires ride like bricks, cause the entire bike to feel even heavier, and offer reduced traction too.
all of those negative effects so that a person THINKS their bike doesn't need an occasional few pumps of air..
most bike problems can be found while checking a bike for air pressures, and a quick look after airing up a tire...like, a bumped QR that needs reset, a frayed cable, or a bent derailleur.
Maybe it's more obvious on a light carbon bike, I don't perceive anything like what you mention with the Slime tube - it's an aluminum Trek Verve 2 comfort/hybrid bike with 45c Bontrager Hard Case tires, rides the same as with a conventional tube.