Run flats
Thread Starter
Instructor
Joined: Mar 2018
Posts: 240
Likes: 105
From: Dallas Oregon
Run flats
will they self seal small holes? Wife came home a week ago, says the right rear on the stingray is six lbs. low, I check, sure enough six lbs on the nose. I top it off, back to 30lbs. Checked it three times, it’s still full? So I’m guessing it picked up trash, lost 6lbs. Of air, threw it out, sealed its self back up, what else could of taken place, any ideas? I’m courious. Just turned 5,000 mi. Going to take in for a tire rotate, maybe better have them check the right rear?
Race Director
Joined: Aug 2015
Posts: 12,224
Likes: 4,716
From: SE WI
You can take it off and soap it up to check for bubbles, or let someone else do it at your tire rotation, However you choose to deal with it, you want it fixed. Don't let the pressure drop below 20 psi or you risk sidewall damage and then it can't be repaired.
Last edited by Zjoe6; Sep 4, 2018 at 06:55 PM.
Melting Slicks
Joined: Nov 2003
Posts: 2,843
Likes: 1,862
From: NEW WINDSOR NY
How are you going to rotate them ? You can not go front to rear and Michelin said you can not rotate side to side. Per Michelin Pilot Super Sport tires are in fact an asymmetrical tires, and therefore cannot be rotated side to side.
Thread Starter
Instructor
Joined: Mar 2018
Posts: 240
Likes: 105
From: Dallas Oregon
Rotate
Race Director
Joined: Jan 2014
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From: Fulshear, TX
C7 calls for side-to-side rotation, the tires are not directional, they are asymmetrical. Asymmetrical means a tire has an inside and an outside, but can can rotate either direction, which is why they can be moved from one side of the car to the other. The C7 maintenance schedule calls for this to be done every 7,500 miles.
Last edited by Kracka; Sep 5, 2018 at 10:31 AM.
Thread Starter
Instructor
Joined: Mar 2018
Posts: 240
Likes: 105
From: Dallas Oregon
Rotate
C7 calls for side-to-side rotation, the tires are not directional, they are asymmetrical. Asymmetrical means a tire has an inside and an outside, but can can rotate either direction, which is why they can be moved from one side of the car to the other. The C7 maintenance schedule calls for this to be done every 7,500 miles.
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Tech Contributor
Joined: Oct 1999
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From: Charlotte, NC (formerly Endicott, NY)
OP: I think you should check your tire for a puncture from a screw/nail. I just had a puncture on the left rear tire of my Terrain over the weekend. Saw a sudden drop from 35 psi down to 27 and then it held pressure. After we got home I was able to inspect the tire in the driveway and found a screw in the tread. Took it to a shop the next day and had the tire repaired. It had a screw about 2 inches long in the tread and all I can think is the initial pressure drop was caused when the tire was first punctured but after the screw was hammered further in so the head was buried into the rubber the hole was sealed by the screw head.
Bill
Bill
Instructor
Joined: Nov 2017
Posts: 105
Likes: 26
From: Delaware
Had similar issue on wife’s SRX. Finally determined tire bead was leaking at the rim. Removed tire, used some magic juice on the tire and rim, reinstalled and problem solved. Had the dealer do it and cost me $60. Wife is very happy. Happy wife,happy life.
Melting Slicks
Joined: Aug 2016
Posts: 2,761
Likes: 1,016
From: MOUNTAIN HOME Arkansas
YES, did it on '14 Z51 & now '16 Z. Simply jack rear/frt up, move each to other side. No breaking down of tires/rims. VOILA! Some will say tires set up a pattern that is disrupted when you turn them around facing opposite direction-that I'll leave up to you.
Last edited by madrob2020; Sep 10, 2018 at 09:32 PM.
Instructor
Joined: Jan 2015
Posts: 226
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From: Dade City Florida
Had same issue with my right rear. They patched it from the inside but still leaks. I took it back and they said there was another hole but they can only patch one hole not more than that.
Melting Slicks
Joined: Aug 2016
Posts: 2,761
Likes: 1,016
From: MOUNTAIN HOME Arkansas
Went out to go to town yesterday a.m. & 5 psi right rear. These are less than 1K miles & was a small nail. 3rd flat in 3 years. Keep the cheapo T-Handle patch repair & tiny air compressor in storage cubby hole in hatch, that uses the sticky strips to push into hole/pull tool back out & snip off the strip that sticks out. I use a Philips screwdriver to enlarge hole to get tool thru tread & is still difficult to push T-Handle tool + sticky strip thru tire w/o bending tool. Tool is worked in/out to "rough up" inside of hole to better seal. With these low profile tires, it can be tricky to push the tool far enough into tire (hits inside of wheel) to get sticky strip all way thru hole to then pull partially out to snip off. Can be done with tire on car normally, especially fronts which can be turned for more clearance. Since I was in garage, it was easier on the rear to just pull it, patch then re-air. Wouldn't be nearly as much fun in the dark, along a road, pouring rain
Definitely cheaper than new MPSS ZP & since I don't track, I'll take my chances-
Definitely cheaper than new MPSS ZP & since I don't track, I'll take my chances-
Last edited by madrob2020; Sep 20, 2018 at 08:38 AM.
Race Director
Joined: Mar 2001
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From: Bonneville Salt Flats
You are sure it was low? I've seen tire sensors do wonky things from computer glitches or what-have-you.
Also since you did add arr, check the valve-core for adequate tightness (if not previously mentioned). I have seen them just loose enough to seep a little and in the process of checking and adding air the core will turn and snug-up just enough to not leak so quickly, if at all. This sounds most likely to me.
As noted, your tires do NOT self-seal unless someone put in Stop Leak for something similar... and it would likely gloop-up your sensor.
All the best.
Also since you did add arr, check the valve-core for adequate tightness (if not previously mentioned). I have seen them just loose enough to seep a little and in the process of checking and adding air the core will turn and snug-up just enough to not leak so quickly, if at all. This sounds most likely to me.
As noted, your tires do NOT self-seal unless someone put in Stop Leak for something similar... and it would likely gloop-up your sensor.
All the best.
