weird tire pressure loss.

[Mazda Pro]

Hit a somewhat deep bumb other day. Tire size 215/45zr17 rims 17x7 all season i was losing psi then i took The tire off sparyed it down no leaks rims arent bent tightened valve core. still losing psi 5 to 8 pounds every 12 hours less then 60 degress outside i dont understand

 

[Bowman]

Damage to the valve stem?

 

[Tyler_]

Try using more soap in the water that you're spraying to locate the loss. I have had that in the past before where I picked up a thumb tack and the top of it broke off. Took about 20 minutes to find the damn leak. Good luck! Can you hear any hissing?

 

[bdahl2]

i had a set of tires do this. place i bought the tires said my side walls wernt rated for the car so they gave out and cause my tires to leak.

 

[Mazda Pro]

No hissing walls fine never did this b4 steams good gotta b a leak

 

[Booski]

Check the bead on the back side of the wheel. Lots of soapy water. Or add like 45 psi and then submerge the tire in water and wait for bubbles

 

[POODLES]

Your probably going to loose tire pressure more quickly while the tire is on the car and the weight of the vehicle is applied. When the pressure is removed the air will probably not be forced out as quickly. However, I suppose, like you said, you can over inflate and look for bubbles.

 

[bdahl2]

mine didnt hiss or bubble. they just took the tire off and notice the side wall was cracked and warn like no other so as the weight of the car sat on the tire it would sneak pressure out. idk why or how but ive never had the problem again when i bought better tires then the cheapest ones on the market