Help! - Tires Keep Losing Air (?)
#1
Join Date: May 2008
Location: Matthews, NC
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Help! - Tires Keep Losing Air (?)
Wheels: JCW R105's (new)
Tires: General Exclaim UHP (new)
Sensores & Stems: Factory BMW/MINI parts (new)
Last week, right front went down (twice) - first time sensor was determined to have not been tightened, second time replaced stem (other stem appeared to not have the hard plastic washer between it and rim) and all seems to be well.
This morning, left rear down to 33 psi (others maintaining at 40 psi - max rating for tires is 51 psi) - no visible leaks, bubbles, etc. Reinflated to 40 psi and we'll see what happens. Tire was fine since Monday when I had everything rechecked after they replaced the front stem above.
This is becoming a major PITA.
Tires are inflated w/ Nitrogen. Any advise as to what might be happening? It's really affecting me work-wise because I have to keep running down to the tire place to get it taken care of.
What am I missing?
Tires: General Exclaim UHP (new)
Sensores & Stems: Factory BMW/MINI parts (new)
Last week, right front went down (twice) - first time sensor was determined to have not been tightened, second time replaced stem (other stem appeared to not have the hard plastic washer between it and rim) and all seems to be well.
This morning, left rear down to 33 psi (others maintaining at 40 psi - max rating for tires is 51 psi) - no visible leaks, bubbles, etc. Reinflated to 40 psi and we'll see what happens. Tire was fine since Monday when I had everything rechecked after they replaced the front stem above.
This is becoming a major PITA.
Tires are inflated w/ Nitrogen. Any advise as to what might be happening? It's really affecting me work-wise because I have to keep running down to the tire place to get it taken care of.
What am I missing?
#2
I also installed my General Exclaim UHP on Monday and there is leak problem, it's the sensor stems that didn't get tighten enough, after I re-tighten it, everything is fine, you might want to re-tighten it to be sure. Just my 2 cents
How's you like the tire. I am coming from the stock 16" bridgespoke with runflat to 17" 5 star pace with General Exclaim. I think the ride is like 20% to 25% better. Keep in mind that I am from 16" to 17", which is even more dramatic
How's you like the tire. I am coming from the stock 16" bridgespoke with runflat to 17" 5 star pace with General Exclaim. I think the ride is like 20% to 25% better. Keep in mind that I am from 16" to 17", which is even more dramatic
#3
#5
The only thing I can say about nitrogen is that the heating and expansion rate differs slightly form normal air
which by the way is comprised of 78% nitrogen to 21% oxygen.
With that said, regular air is likely to leak before nitrogen only if cooled sufficiently to allow the air inside to
contract to a point where the seal around the rim might be broken.
Last edited by cabriopilot; 07-03-2008 at 03:59 PM. Reason: added more mumble jumble.
#6
Join Date: May 2008
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Prost, can the stem be tightened at the base, or does the tire have to be dismounted and the stem tightened from inside?
So far, I LOVE these tires. I went from 15" to 18" with no noticeable difference in ride quality - probably due to the inexpensive 15's from the factory compared to the higher-end Generals.
The big selling point to me of Nitrogen was the lack of pressure change due to temperature (summer vs. winter, etc.). I was also told about the "less leaking", but I think they meant seeping through the actual tire sidewalls (on a moleculer level ).
I'm sure that if you have an actual leak (bad seal, puncture, etc.) the Nitrogen is no beter than the air.
So far, I LOVE these tires. I went from 15" to 18" with no noticeable difference in ride quality - probably due to the inexpensive 15's from the factory compared to the higher-end Generals.
The big selling point to me of Nitrogen was the lack of pressure change due to temperature (summer vs. winter, etc.). I was also told about the "less leaking", but I think they meant seeping through the actual tire sidewalls (on a moleculer level ).
I'm sure that if you have an actual leak (bad seal, puncture, etc.) the Nitrogen is no beter than the air.
#7
Yes, you can tighten it from outside, the tire guy didn't need to dismount my tire. No air leak since he tightened it 4 days ago (finger cross ).
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#10
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#11
See above... fill your bathtub or the kitchen sink with water and put the tire in it... or if you have a pool put the tire in there. The bubbles will show you where the leak is quicker than all this guessing and pontificating. Hope you find it. A leak is a leak... air, nitrogen, doesn't matter, they'll both leak if you give them the opportunity.
#13
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