200x rear tire problem

[HondaSnake]

I have a 200x with 20x11x8 tires on 8 inch alum rims. The problem im having is if i dont pump the tires up rock hard. The tire goes flat and comes off the bead. Did anyone ever see this problem? Know what causes it? I just bought the bike. The tires are itp holeshots. Any help is appreciated.

[M.Pargiello]

Probably a flat spot in the wheel, or the bead is fudged. Did you buy the tires used?

[HondaSnake]

They came on the bike. Both tires do it. The rims dont have any bends that i can see. Its really weird. Im thinking i need to just toss em unfortunetly. btw is there a classified section on here where people can post and sell parts and bikes?

[CodyRosa]

well if your just going to toss them i'll take them =) of course i'll pay shipping

I don't know much about tires but is the bead even set? Don't you need a lot of air pressure to actually set them? Like say your tire needs 15psi to set bead and only 5psi to run them.. well maybe your only giving them 5psi and there not seating correctly? Maybe it wasn't on there good.

[daniels85200x]

Put tubes in them

[Dustin96]

I agree just put tubes in them

[CodyRosa]

I think the tires just are not on the bead properly. I suggest just bringing them in to someone that can do (if you don't know how) it for you... should be like 10 bucks maybe cheaper for both.

[Dustin96]

or try popping the bead and put some bead sealer on and air them back up again