Defective tire stem - is my tire ok?

[The Screwdriver]

So 1 month ago, I got new tires and wheels (BBS RK 17x9 with 275 Kumho on all 4). When I pulled out of the garage on Saturday, the car felt sluggish and the rear left tire looked a little low. I had to run some errands and figured I could fill it up at the gas station by the grocery store. Well by the time I got there (7 miles later) the tire was totally flat. The car wasn't pulling in any direction... it just felt slower. I felt like an idiot for riding on a flat tire

Anyway, to make a long story short, the valve stem was defective. Not the core... but the air was escaping around the stem. It was pretty fast for a slow leak... Lost about 10lbs of pressure every 5 miles. Luckily, the rim wasn't damaged at all. Just a bunch of rubber where the tire was riding on the rim, but it wiped off easily.

I had never seen this before and neither did the mechanic. Is this common?

Do you think I damaged the tire by driving on it nearly flat for 7 miles?

Would the mechanic have to dismount the tire to replace the defective stem? If so... I figured he would have checked out the tire from the inside to make sure there was no damage.

What do you think?

Thanks,
Jim

 

[Az Pete]

Yep,may have damaged the tire.Have it dismounted and look inside for crumbled rubber. Also, look at the sidewalls for worn areas on both the inside and outside of the tire. It will look like a groove on the inside, all the way around the tire. This would now be a weak area. I have seen tires ruined in just two miles of low pressure with the low profile tires. FYI, I work in a tire shop as sales and have seen a lot of this.

 

[Mustang5L5]

That's why they always try to sell you new valve stems with you go into a tire shop for new tires.

This happens a lot really. #1 location for leaks

 

[The Screwdriver]

Thanks for the replies. They were all new rims tires and valve stems. All new.

I can't really see any visable damage on the outside. I'll drop by the shop this week and see what they can do about it.

Thanks,
Jim