Tire Losing Air?
01-30-2019 | 08:57 PM
#31
Thread Starter
Rennlist Member
Joined: Jul 2001
Posts: 12,535
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From: Marineland FL
Shortly after leaving for dinner tonight the passenger's side rear was 2 lbs lower than the driver's rear; they were both the same when I checked before leaving with my gauge. I checked them about 10 minutes later though and the rears were the same and I continued to monitor them throughout the evening while hitting a couple stores before and after dinner, and they stayed the same (anywhere from 40-44) all the way home. Man, I am baffled but will continue to monitor them and if I find out I have a leak I will let everyone know.
01-30-2019 | 09:12 PM
#32
Three Wheelin'
Joined: Sep 2018
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I regularly get readings side to side that vary by a few pounds. As an example, the tires that are exposed to the sun will be higher than the shaded ones, this is while driving.
Have fairly accurate gauge, gauge and TPMS pressures read the same, System reading is accurate.
Don't know if this is a factor, but the volume of air in these low profile isn't that great, so a small change in temps may result in larger swings than a tire with more air volume.
Have fairly accurate gauge, gauge and TPMS pressures read the same, System reading is accurate.
Don't know if this is a factor, but the volume of air in these low profile isn't that great, so a small change in temps may result in larger swings than a tire with more air volume.
01-30-2019 | 09:18 PM
#33
Three Wheelin'
Joined: Feb 2016
Posts: 1,852
Likes: 333
From: Connecticut
Keep in mind that due to the bar to psi conversion, the in-car pressures will skip certain numbers. For example 2.7 bar is 39 psi while 2.8 bar is 41 psi. It could be why you see a couple psi swing when in fact there was a marginal swing in actual tire pressure.
01-31-2019 | 10:17 PM
#35
Thread Starter
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Joined: Jul 2001
Posts: 12,535
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From: Marineland FL
Pretty big screw. The local tire shop has a huge glass jug that is full of things they have taken out of tires...some much bigger ones in it.
I still cannot figure out why the car and my gauge both showed low but I checked the rears again today and both were at 40 so I consider the issue closed.
I still cannot figure out why the car and my gauge both showed low but I checked the rears again today and both were at 40 so I consider the issue closed.
02-01-2019 | 01:42 AM
#40
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From: Canada & the Alps
Key word being "proper" which is why I'd do it myself and maybe on a daily driver, not my Porsche capable of much higher speeds. I doubt any pro shop would.
People go nuts on what is the best oil and what is the best oil filter (those threads have more text than an encyclopaedia), yet they want to save on a tire.
People go nuts on what is the best oil and what is the best oil filter (those threads have more text than an encyclopaedia), yet they want to save on a tire.
02-01-2019 | 07:13 AM
#42
Racer
Joined: Jan 2018
Posts: 338
Likes: 202
From: Sarasota, FL USA
How would you guys feel about NOT going to the dealer for tires? Could I just send tires from tire rack.com to tire kingdom and have them put them on? ... or are they way more likely to screw up the rims???
02-01-2019 | 08:27 AM
#44
Racer
Joined: Apr 2017
Posts: 386
Likes: 83
From: Mid-Midwest
No guarantee that even the dealer won't ding your rims. Basically depends on how often they remove and mount tires. A shop that is experienced in mounting low profile tires should be fine. When I change the run flats on my BMW, I have to drive 2 hr to the nearest dealer because the local shops say they don't have the equipment to take off RFs
02-01-2019 | 09:13 AM
#45
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Joined: Dec 2018
Posts: 874
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From: Southern New Jersey
Over the years I’ve repaired plenty of tires. Proper to me means removing the tire from the wheel and installing a radial patch on the inside of the tire.
While I understand that the tire does loose its speed rating with the repair, in 33 years of driving I’ve never had a repair fail nor a repaired tire blow out.
The good folks at Porsche do recommend replacing a damaged tire. I would only replace if the damage is too close (within 1 inch) of the sidewall.
Hope you find out what’s wrong soon BobZ. That kind of stuff drives me mad!
While I understand that the tire does loose its speed rating with the repair, in 33 years of driving I’ve never had a repair fail nor a repaired tire blow out.
The good folks at Porsche do recommend replacing a damaged tire. I would only replace if the damage is too close (within 1 inch) of the sidewall.
Hope you find out what’s wrong soon BobZ. That kind of stuff drives me mad!