Fun times with tires! (I got lucky)

CybrSlydr

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Yesterday, I noticed what sounded like a rotational rattle coming from the back end of my Jeep. I initially though it was some ice or the like stuck to a part of the frame since we're in the teens with temperatures now and had quite a lot of snow last weekend.

I noticed it got worse with speed, but went away under about 10mph. This is driving in the city, went up to 40 to see if it'd shake off or something - no go. So, I recorded a video while driving to ask you folks what it might be.


So I verified it wasn't my M1 case rattling around in the back. I then went to look under the Jeep and saw this.

54123721225_95261bfa95_h.jpg



54123720745_3894b288c8_h.jpg


I think I found the problem. lol

When I hooked up the air compressor, it was reading 6PSI. How in the world I didn't roll it off the bead driving around town on it, I don't know. The tire was also hot to the touch - tread and sidewall (I wonder why?... lol) It's been a little low recently, but I just chalked that up to going from the 60s to single-digits overnight over the past week, though none of my other tires seemed quite as affected.

I aired it back up to 35PSI and took it for a spin around the complex and the sound is gone. Going to go renew my registration after lunch so I'm going to see if it's still holding air or if I need to take it to a shop to look for a puncture.

Moral of the story - check your tires before you leave home. lol
 
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Only time I've debeaded a tire at low pressure was winching sideways in deep snow.

-Mac

Well, I was going around city corners and some informal googling said running KO2s at 10PSI is about the limit - so seeing I was at 6, I considered myself lucky I didn't unseat the tire from the rim going around corners.
 
Yesterday, I noticed what sounded like a rotational rattle coming from the back end of my Jeep. I initially though it was some ice or the like stuck to a part of the frame since we're in the teens with temperatures now and had quite a lot of snow last weekend.

I noticed it got worse with speed, but went away under about 10mph. This is driving in the city, went up to 40 to see if it'd shake off or something - no go. So, I recorded a video while driving to ask you folks what it might be.


So I verified it wasn't my M1 case rattling around in the back. I then went to look under the Jeep and saw this.

View attachment 570925


View attachment 570926

I think I found the problem. lol

When I hooked up the air compressor, it was reading 6PSI. How in the world I didn't roll it off the bead driving around town on it, I don't know. The tire was also hot to the touch - tread and sidewall (I wonder why?... lol) It's been a little low recently, but I just chalked that up to going from the 60s to single-digits overnight over the past week, though none of my other tires seemed quite as affected.

I aired it back up to 35PSI and took it for a spin around the complex and the sound is gone. Going to go renew my registration after lunch so I'm going to see if it's still holding air or if I need to take it to a shop to look for a puncture.

Moral of the story - check your tires before you leave home. lol

The dry rot is unreal. holly shit. how old is that tire??? theres date codes on tires. shouldnt drive on tires 5+ years old. not sure how old yours are but that dry rot is concerning. (my family owns a goodyear, i grew up in the tire industry)
 
Not to mention driving on a low tire enough to get it hot causes permanent sidewall damage. I don't use the phrase ticking time bomb much but in this case it applies.
 
You almost certainly have a leak. I'd look for nails.

If you didn't have a leak then it has been very low for a LONG time, and it's very likely that it has internal sidewall damage.
 
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ahh ok lol.

i go buy what the manufacturer says. but than again i sell parts and tires LOL....so its my job to take your money haha

The KO3s are out and the closest they come to the stock size is that LT265/75R16. I'd like to get those, but I'm concerned about rubbing and clearance on a stock Rubicon.
 
Not sure you can really make a blanket statement about tire age. For a long time Michelin said 10 years and I think they still do. Most other manufacturers are either silent or they say 6 years. ST type trailer tires usually 4 years max. I've found that on our lighter vehicles you can push it further than a heavier vehicle. On my Superduty and motorhome I go six years. not sure how long I'll go on the TJ. Running Michelin on the motorhome and Cooper on the Superduty. Trouble with having a slew of vehicles is my tires usually age out long before they wear out. My wife went 10 years on Michelins in her Mercedes 124 diesel.
 
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When I contacted Mickey Thompson about the tire life, they told me 10 years after being mounted. Mine are 10 years old (8 years of use) and have minor cracks.
Rubi tire1.jpg

tire wear.jpg