Self sealing tires

550Doug

Member
Location
Southern Ontario
Two weeks ago I was driving my "weekend" car through a subdivision where there is some construction of new homes going on. I was on a heavily trafficed portion of pavement and as I turned a corner I could hear a flap-flap-flap on my right rear tire. I thought it might be something on the road but saw nothing, so then maybe something got jammed up near the brakes, I thought. I found nothing on the tires nor the brakes and the car drove very normally after that. The car sat for a week before I decided to look again more closely and still found nothing. I checked the tire pressure on all 4 tires. The driver side tires read 33 lbs psi and the passenger side tires both read 22 lbs psi. AHA!, so I must have hit something with some nails in it with both tires on the passenger side. Found nothing. I did the soapy water test, no bubbles.
So I inflated the tires back up to 33 lbs psi and again checked for bubbles from more soapy water. Nothing! A week has gone by and still all the tires are reading 33 lbs psi. Looks like I have a pair of self sealing tires!!
 
I hate when that happens.

A couple of weeks ago, the "Low Tire" light came on when my wife was driving our Lincoln MKX. I checked the air pressures and the right rear was 'way low. I aired it up and drove the vehicle to our local Co-op station to have it fixed. They tanked it and did the usual checks and could find absolutely no leak.

I went back home and checked the air in it for several days and no leak. So, whet the heck?
 
Sometimes they can lose air with a change in weather and sometimes the tire guy just can’t seem to find a leak
 
The tire could have a small nail or screw that will only leak when the car is parked with it on or near the bottom. I have seen that on rare occasions.
 
As others have said, could be a nail stuck in it, sealing the hole.........most of the time.

Take it off. Give it a good visual & have your soapy solution ready. Better in your garage, than out on a freeway.
 
I had a leaky tire with my current Michelins on my f250. I looked over real good couldn't find leak so I took it to the professionals where I bought the tires. He went thru the same steps I did and couldn't find leak. He deflated the tire repositioned it on rim, rebalanced and no more leak down.
 
If not leaking as you looked. Put it on it's side, put strong soap on the bead at the rim/wheel, and let set over night. Probably will be shaving cream size bubbles around the bead. I find more leaks there than anywhere else on tires. Then put that bead sealer in the bead after breaking down solves problem.
 

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