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Author Topic: Contant Tyre Pressure Loss - At Breaking Point.  (Read 6105 times)

Offline bestfc01

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  • Model: Galaxy Mk2
  • Spec: 2.3 Petrol Ghia
  • First Name: Craig
  • Region: South East
Contant Tyre Pressure Loss - At Breaking Point.
« on: October 11, 2016, 10:29:30 AM »
Hi Guys,

I have purchase a smaller more economical car for my daily commute and am considering whether to keep the gal.

Currently im in the motion of getting rid of the gal due to the amount of tyres i seem to be installing. 9 tyres and 4 second hand alloys since Feb 16'
Since Feb 16' ive spend nearly 800 in tyres and alloys, of which i thought the new alloys resolved the issue


Yesterday, (for the first time in 3 months) my drivers side front and rear had lost pressure. I pumped the back up with no signs of punctures of valve issues, but overnight they have gone completely flat, of which there is now pin prick holes where the alloy rested on the tyre. This seems to always happen on the new and old alloys once the tyre has gone completely flat.

Is there anything i can do to determine why the tyres keep loosing pressure?
I check the pressure every week when i do a full fill up of which the majority of the time its only typically 1-2psi is lost.

I have been following the filler cap guide of 41psi front 38psi rear.
(Typically only 2 people in the vehicle during the week with no load in the rear).
The tyres being install have a max PSI of 50.

Would be a shame to see the gal go, however one more tyre would see me spend more in tyres than i paids for the gal.





Offline johnnyroper

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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #1 on: October 11, 2016, 10:46:30 AM »
What was condition of the inside of alloy? They are drone to corrosion on the bead seal which causes pressure loss. When you say had loads of tyres fitted is that due to damage after they have gone down?



I had the issue previously that was initially solved by tyre fitter cleaning wheel and using some sealant instead of the traditional lubricant,it did start again so I used some tyre slime which worked fine.

Offline Tezerez

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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #2 on: October 11, 2016, 01:48:45 PM »
I get my tyre fitters to clean and seal round the valve hole too. Really seems to help, even with 13 year old scabby alloys.

Offline Mirez

  • Pondering the next mod...
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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #3 on: October 11, 2016, 04:14:22 PM »
A decent tyre will take the weight of a car on its sidewall overnight without a problem. Ive picked cars up that have been on flats for months which just reinflate so the fact you are getting holes tells me...

1) Your tyres are really cheap
2) The wheel is beavily corroded
3) You have a lot of kerb damage

A 1/2 PSI drop a week is abnormal, you shouldnt loose that per month let alone per week. What tyres are you fitting and are they reinforced with at least a 95 load rating?
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
14 VW Tiguan 2.0 TDI 177 AWD R-Line in Deep Black Pearl
With panoramic sunroof, bi-xenon headlights remapped at 205bhp.
08 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)

VCDS HEX/CAN - Scans/Coding done in Wiltshire in exchange for winegums! :)

Offline bestfc01

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  • Model: Galaxy Mk2
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  • First Name: Craig
  • Region: South East
Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #4 on: October 12, 2016, 08:58:05 AM »
What was condition of the inside of alloy? They are drone to corrosion on the bead seal which causes pressure loss. When you say had loads of tyres fitted is that due to damage after they have gone down?



I had the issue previously that was initially solved by tyre fitter cleaning wheel and using some sealant instead of the traditional lubricant,it did start again so I used some tyre slime which worked fine.

Condition of the alloys inside isnt too bad. Not new by any means.
Yeh, i get the 3 - 5 pin pricks in the tyre wall once the wheel goes completely flat.
I know these holes wasnt there this time as i pull the alloys off and double checked for leaks.

Not sure what they used last time, although it was black (if thats any help :))

I could give the slime a go, is this the stuff you put directly in the tyres from the valve?



I get my tyre fitters to clean and seal round the valve hole too. Really seems to help, even with 13 year old scabby alloys.

The tyre guys have been doing this when the gave the rim a quick clean




A decent tyre will take the weight of a car on its sidewall overnight without a problem. Ive picked cars up that have been on flats for months which just reinflate so the fact you are getting holes tells me...

1) Your tyres are really cheap
2) The wheel is beavily corroded
3) You have a lot of kerb damage

A 1/2 PSI drop a week is abnormal, you shouldnt loose that per month let alone per week. What tyres are you fitting and are they reinforced with at least a 95 load rating?

This is what i thought. The tyre wall shouldnt get damaged just because its gone flat.

The tyres are mid-range (link below) however because of all the constant replacements it currently has high range budgets on a W (93) rating.
https://www.kwik-fit.com/tyres/search/details/hankook/ventus-prime3-k125/t1014476

The outer wheel looks fine. The iner wheel isnt too bad, however because i dont know how to take tyres of the alloys i cant confirm.
The previous alloys did have a lot of curb damage, however the current ones dont. Well they dont have any visible damage anyway.

I always avoid bumping up kerbs etc unless a member of the emergancy service needs me to.

My car parks on a drive way at about 30 degree angle. This has a flat curb for entry and there is nothing on the driveway which could cause damage to the tread or wall.
I thought once i moved this would get better as i previously had to park the gal in a parking bay really tight to a curb.

The MOT is at the begining of Feb so at breaking point of what to do next.
Im abit reluctant to add more  tyres for the same thing to happen.


Offline Stumuzz

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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #5 on: October 12, 2016, 10:10:01 AM »
I get my tyre fitters to clean and seal round the valve hole too. Really seems to help, even with 13 year old scabby alloys.

I also have scabby alloys :D with budget 45 fitted tyres.

Stuart.
The more I learn makes me realise how little I know.

Offline bestfc01

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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #6 on: October 12, 2016, 10:14:10 AM »
How easy is it to remove the tyres from the alloy if the wheel is completely deflated?

Wondering if its worth putting the car on axle stands and take the two duff tyres off and giving the inside of the alloys a blody good clean.

Offline johnnyroper

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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #7 on: October 12, 2016, 10:24:28 AM »
Unless you have a tyre machine you have no chance of removing yourself. If you managed to break the bead you would end up wrecking whee trying to lever tyre off.
Yes the slime goes in via the valve you unscrew the insert and fit tube over and squeeze it in then drive for a while to circulate around.

Offline bestfc01

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  • Posts: 159
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Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #8 on: October 12, 2016, 12:34:27 PM »
Ah, i had a feeling.
I suppose if anyone could do it it would void the point of tyre mechanics.


Ok, might grab some slime and pump the tyres up and see if that help before replacing the tyres.

Offline bestfc01

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  • Posts: 159
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  • Model: Galaxy Mk2
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  • Region: South East
Re: Contant Tyre Pressure Loss - At Breaking Point.
« Reply #9 on: October 12, 2016, 12:36:41 PM »
Any recommendations on slime?

 

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