Tires come of the bead when out of air???

Doug Domm · 01-05-2013, 11:42 PM

I have a pair of wheels for a friends car here and when the tires loose air they come off the bead. The car is on the lift so not worried about damaging the tires or rims. I personally have never had this happen before. Both the tires and wheels are brand new. M/T 9x29.5 bias on an 8 inch wheel. Anyone else have this happen?

Dragsinger · 01-06-2013, 12:35 AM

Doug,
our dragster front tires do that

Dick Butler · 01-06-2013, 10:43 AM

Probably would not happen if shape of tire cold and uninflated werent narrower than rim width. It is the fresh strength of the rubber shape pulling them off I would say. I imagine if it were a 5 inch rim it would not have a pull inwards to overcome the width of the rim.

Run to Rund · 01-06-2013, 01:39 PM

That will happen if the wheels don't have safety beads--bumps around the rim inboard of the tire bead surface to retain the bead.

01-05-2013, 11:42 PM	#1
Doug Domm Member Join Date: Apr 2006 Location: canada Posts: 251 Likes: 28 Liked 84 Times in 21 Posts	Tires come of the bead when out of air??? I have a pair of wheels for a friends car here and when the tires loose air they come off the bead. The car is on the lift so not worried about damaging the tires or rims. I personally have never had this happen before. Both the tires and wheels are brand new. M/T 9x29.5 bias on an 8 inch wheel. Anyone else have this happen?

01-06-2013, 12:35 AM	#2
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: Tires come of the bead when out of air??? Doug, our dragster front tires do that __________________ Larry Woodfin 471W

01-06-2013, 10:43 AM	#3
Dick Butler VIP Member Join Date: Oct 2002 Location: Richmond Indiana Posts: 1,196 Likes: 5 Liked 32 Times in 19 Posts	Re: Tires come of the bead when out of air??? Probably would not happen if shape of tire cold and uninflated werent narrower than rim width. It is the fresh strength of the rubber shape pulling them off I would say. I imagine if it were a 5 inch rim it would not have a pull inwards to overcome the width of the rim.

01-06-2013, 01:39 PM	#4
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Tires come of the bead when out of air??? That will happen if the wheels don't have safety beads--bumps around the rim inboard of the tire bead surface to retain the bead.