Hello, I am new here. Glad to find a great car community here.
This Monday, when I almost arrived at home from work I noticed some noise from the car tire. Then I found the left rear tire is completed flat (pressure is zero). I may have driven in complete flat for a few minutes (one or two miles. The whole trip is two miles). I went to the tire shop on Tuesday that I bought the tires 6 months ago. They found it is the valve core of that tire is loose and used the valve core tool fixing the leak. They also found that the rim is warped so it needs to replace. But they said the tire is OK. Now I drive with same tire with new rim. I did some online research these days. It seems from what I read that driving in complete flat tire could cause tire cords inside of the tire over-stretch and could break even though there is no noticeable damage on tire. And it may blow out when driving on highway.
Is this true? Should I replace the tire to be safe? Your comments or opinions would be much appreciated.
Without eyes on tires I guess we have to rely on both you and the tire shop as being correct. Hopefully both of you are.
If it were me I would have a bit of a concern over this. Not only because tire pressure was zero (1 to 2 miles) but who knows how many miles that tire was being used underflated due to the valve core and warped rim and was not noticed until the pressure hit dead zero.
@ok4450 Yes. You are right. That is my best guess but I did not check the tire at all earlier that day. So it could be more time for zero and underflated condition. Even though each of my trip are all short, I don’t know which day the underflation started as I do not feel anything different until I heard the noise Monday afternoon. I have no problem to change the tire. I am just wondering whether it is reasonable that ’ it can cause tire cords inside of the tire over-stretch and could break even though there is no noticeable damage on tire’. Or, if we do not see any problem visually, the tire cords is definitely OK?
I don’t know how anyone can determine cord condition unless they have some kind of special x-ray vision or there are some exterior signs of bulging, etc. Sometimes those signs may not show up until later such as a bulge.
A bulge should not be considered the same as an indentation, or undulation, in the sidewall which can be normal and is due to radial tire construction only. The indentation is normal and safe.
Several decades ago my wife drove the last 15 or 20 miles home with a right rear tire not flat, but underinflated. It was down to about 13 pounds. The tires only had about 5k miles on them and that tire was ruined due to the sidewall getting scrubbed badly.
Driver’s sensitivity to things like that varies a lot. Some can identify a loss of 5 psi and some can’t tell when the tire has shredded apart. And anywhere in between.
There was a guy here a few years ago that drove a taxi and claimed he could notice a 1/2 psi difference and was adjusting his tires several times a night.