tyre valves

boyoh

Hello,
Just a word of caution about tyre valves. If your van has been lying up. it might be wise to check your valves before setting out on a long journey.I took my van to the garage this morning to check the tyre pressure when I had done that I had trouble getting one of the dust caps back on because of the hub cap. I put my finger under it to lift it up and "bingo" the air came rushing out. Anyway I changed the wheel and drove home, I took off the hub caps and checked the other wheels,one more valve broke off in my hand,so come Tuesday i will have new valves fitted to all five wheels.If i'd taken the hub cap off in the first place i may never have found the problem until I was barrelling down the motorway this summer,so just in case you are not aware of this problem, check it out.But what do I know, Happy camping :D

boyoh

Only managed to get my tyres checked today. Four of the five needed new valves,the spare was ok as were the tyres themselves,so take a few minutes to check,just move them with your finger and you will notice the little cracks,if there are any.:cool::D

*Kol*

Thanks for that. I just checked mine last night but they are metal valves. I had never seen that type before.

thetyreman

Yea high pressure valves for the extra pressure/weight....

boyoh

thetyreman wrote: »

Yea high pressure valves for the extra pressure/weight....

Thanks for that, never knew there was a difference, except between tubeless and non tubeless. Just googled it, and yes there is a valve which can take up to 7Bar. Now the dilemma i'm in is,are my new ones high or low pressure and what are the steel one's Kol mentioned.As my camper is not a conversion, I assume the valves were the right ones for the job,and as the tyre guy pumped them to the required 4.5 Bar I will assume he knew what he was doing,but I will ask (but will I get the truth) The problem I had was rotting rubber (did not occur in the spare) so I suppose it can happen regardless of whether they are hi or lo pressure valves.If you have any more info, could you please post it.Thanks. Coolaboola:)

*Kol*

These are the ones that I have.




According to the website "High Pressure valves are recommended for all applications where tyres are inflated to 60psi (thats 4 bar) or more. They are especially needed when fitting alloy wheels to motorhomes where the original steel wheels were fitted with a metal valves." There is no danger of them snapping off as they are all metal but the rubber could deteriorate over time and leak.

I guess the same would apply for steel wheels inflated to more than 60 p.s.i.

Michelin recommend that you change the valves at every tyre change. According to them "The effect of centrifugal forces are quite dramatic. At a speed of 62mph (100kmh) the valve has a force of 1.7Kg pulling on it."" Interesting.

boyoh

Thanks Kol, those look very impressive,the high pressure ones I googled looked the same as any other valve except they were high pressure.The part that gave the trouble is the rubber boss where they attach to the wheel,so it could happen to the steel ones too, as they have a rubber boss,but I like the look of your's do you know where I can buy a set?

*Kol*

boyoh wrote: »

Thanks Kol, those look very impressive,the high pressure ones I googled looked the same as any other valve except they were high pressure.The part that gave the trouble is the rubber boss where they attach to the wheel,so it could happen to the steel ones too, as they have a rubber boss,but I like the look of your's do you know where I can buy a set?

The rubber boss on the steel valves is only a seal. The core is still metal so there is no chance of it breaking off.

I dont know where you can buy a set as they were already on mine. Try a tyre dealer to see if they stock them.