Tyre Pressure

pomegranitelinz · 16th November 2018, 17:21

Recently purchased a Vauxhall Viva and put new tyres on the front. They both seem to lose pressure slowly between 2-4 psi weekly. Can you fit inner tubes to the tyres to stop pressure loss or is it wheel damage causing this loss?

Many thanks
Lindsay

BigRuss · 16th November 2018, 18:08

It could be the condition of the rims thats causing a slow leak, if it's an original Viva (1963-1979) and not one of the new ones and it's on standard wheels you should be able to fit inner tubes if you wish.

Russ

roverbarmy · 16th November 2018, 19:37

More than likely will be rust/corrosion on the rims or a leaking valve (soap and water test to produce bubbles will tell you where it is leaking). Tube fitting on tubeless rims is a last resort which is often frowned upon as a permanent solution.

https://www.bigtyres.co.uk/blog/fitt...ess-tyres.html

pomegranitelinz · 16th November 2018, 19:47

It’s a 2015 1.0 Viva as suggested will try soap/water leak test

RoverP480 · 16th November 2018, 20:01

Tubes should never be used with wheels with the humps for tubeless radial tyres. The tube can be damaged or weakened during fitting, with catastrophic results should it blow at high speed. This was the advise from both Michelin and Rover engineers I worked with. Due to the high pressure needed to seat the tyre over the hump the tube is pressed hard against the wheel and tyre. As the tyre seats the tube is locally stretched as it cannot evenly move. This can result in local weakening or failure. If it fails you know about it , but should it weaken you cannot say if or when it will do so.

Coups · 17th November 2018, 17:54

The easiest and safest solution here is to visit any tyre fitters and tell them what’s happening. They’ll reseat the tyres, cleaning the inner rim if required. I’m planning on doing this with my winter set. All 4 are losing pressure to some extent - bubbles apparent between the rim and tyre.

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16th November 2018, 17:21	#1
pomegranitelinz Regular poster Rover 75 Club 1.8 SE T Copperleaf Red Join Date: Nov 2014 Location: Eastriggs Dumfries & Galloway Posts: 78 Thanks: 122 Thanked 8 Times in 5 Posts	Tyre Pressure Recently purchased a Vauxhall Viva and put new tyres on the front. They both seem to lose pressure slowly between 2-4 psi weekly. Can you fit inner tubes to the tyres to stop pressure loss or is it wheel damage causing this loss? Many thanks Lindsay

16th November 2018, 18:08	#2
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	It could be the condition of the rims thats causing a slow leak, if it's an original Viva (1963-1979) and not one of the new ones and it's on standard wheels you should be able to fit inner tubes if you wish. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. Last edited by BigRuss; 16th November 2018 at 18:13..

16th November 2018, 19:37	#3
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	More than likely will be rust/corrosion on the rims or a leaking valve (soap and water test to produce bubbles will tell you where it is leaking). Tube fitting on tubeless rims is a last resort which is often frowned upon as a permanent solution. https://www.bigtyres.co.uk/blog/fitt...ess-tyres.html __________________ Oil in my veins! Last edited by roverbarmy; 16th November 2018 at 19:45..

16th November 2018, 20:01	#5
RoverP480 Gets stuck in None at the moment Join Date: Jan 2018 Location: Hereford Posts: 501 Thanks: 1 Thanked 165 Times in 146 Posts	Tubes should never be used with wheels with the humps for tubeless radial tyres. The tube can be damaged or weakened during fitting, with catastrophic results should it blow at high speed. This was the advise from both Michelin and Rover engineers I worked with. Due to the high pressure needed to seat the tyre over the hump the tube is pressed hard against the wheel and tyre. As the tyre seats the tube is locally stretched as it cannot evenly move. This can result in local weakening or failure. If it fails you know about it , but should it weaken you cannot say if or when it will do so. Last edited by RoverP480; 16th November 2018 at 20:05..

16th November 2018, 19:47	#4
pomegranitelinz Regular poster Rover 75 Club 1.8 SE T Copperleaf Red Join Date: Nov 2014 Location: Eastriggs Dumfries & Galloway Posts: 78 Thanks: 122 Thanked 8 Times in 5 Posts	It’s a 2015 1.0 Viva as suggested will try soap/water leak test

17th November 2018, 17:54	#6
Coups Posted a thing or two Rover 75 Contemporary SE Join Date: Apr 2014 Location: Dundee Posts: 1,941 Thanks: 545 Thanked 520 Times in 402 Posts	The easiest and safest solution here is to visit any tyre fitters and tell them what’s happening. They’ll reseat the tyres, cleaning the inner rim if required. I’m planning on doing this with my winter set. All 4 are losing pressure to some extent - bubbles apparent between the rim and tyre. Sent from my iPhone using Tapatalk