YOUR TYRES:- A MUST READ

Coastrunner

Active Member
Mar 18, 2012
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South Coast NSW
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Hi guys.

I just want to pass on a very important message to everyone regarding their tyres.

There are so many of us driving around with tyres that have adequate tread and adequate pressure inside. While this may appear to be a safe situation, many of us may still be chancing danger.

The problem with most caravans is that they don't do a lot of milage and tyres may last well past their expected lifespan. Most tyres that last beyond 5 years can begin to develop cracks in the side wall.

See pic below.

Tyre.jpg


Bottom line. Check your tyres before going on a trip, and if you see cracks developing in the sidewall then it's time to replace your tyres.

There are a few things that cause a tyre to develop cracks in the sidewalls.

1. Sunlight:- A tyre that is constantly exposed to the sun when in storage has greater chance of developing cracks in the sidewalls much earlier than those not exposed to sunlight.
TIP:- Have your tyres covered from the sun. Either cut a piece of timber masonite to the shape of your wheel arch and have it cover the tyre when parked or some other type of cover.

2. Tyre is under recommended pressure:- A tyre that is under the recommended pressure usually develops a flat spot causing tyres to stretch and develop cracks in the side wall.
TIP:- Keep your tyre pressure up to recommended pressure, especially before going on a trip

3. Age:- Like everything else, we can look after ourselves and our things, but age still catches up on us all. Even those of us who look after our tyres as best we can cannot fight the ageing process. We can slow it down but can't stop it. So it's a good idea to keep an eye on the side walls and look for signs of cracking. Once again as soon as you see them starting to appear, it's time to get some new ones.

Another tip I was told by my "Tyre Guy" was to raise your wheels and sit the axel of the van on jacks making the tyres sit just off the ground. This keeps your tyres from developing a "flat spot" and also keeps them free from moisture absorption. If you don't feel energetic enough to do that, then he recommends that you always keep your van off the grass/ dirt. Have a slab laid or even just park your van on pavers.

We all hate flat tyres, and I know some of us know how inconvenient a flat tyre on a caravan is. Also getting a burst tyre in a van while travelling a 80 to 100km`s can be very dangerous. Vans often slide all over the road with sudden tyre failure, and our chances of having an accident are very high when this happens. Another point is that we never have flats in convenient places either. So best to avoid them however we can.

This is what can happen if cracks in tyre walls aren't noticed. When our vans drop by 5 or 6 inches to one side when being towed at highway speeds along a road, we can be at high risk of being involved in an accident.

Screen Shot 2014-02-19 at 1.21.17 PM.png


So can I take this opportunity and ask all of us to take a few minutes out, and take the time to check your tyre pressures, and the sidewalls for any cracks. Definitely worth the chance to reduce the chances of damage to our tyres, our vans and ourselves.

Travel Safe Guys!
 
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Coastrunner

Active Member
Mar 18, 2012
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South Coast NSW
www.expandasdownunder.com
On a slightly different note, before I bought myself new tyres I found that my old tyres always appeared to be under inflated and a little flat when the van was loaded.

Even though I had them pumped to the maximum pressure (which was only 45PSI).

I mentioned this to my van servicer, and he advised me to upgrade to tyres with a max pressure of at least 60 PSI.

I did exactly that, and noticed straight away, that the extra 20PSI made all the difference.

Even when loaded up there was no longer a flat spot I used to see. (Especially when the 2 x 80 litre water tanks were full)

He said light truck tyres are the way to go.
 
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bigcol

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Nov 22, 2012
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I think I have those Sarajarvo or whatever they are called
they will be replaced very soon with Micky T's - to match my car of course.......... also a stronger tyre

thanks for the "heads up" @Coastrunner good point for all of us to remember
 

DaveS

Active Member
Jan 10, 2014
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your ID plate on the van should show the cold tyre pressure and they do vary immensely from one van to the next, my advice is to run to that pressure and stick with the same rubber as what was factory fitted (should be light truck rated for most vans anyway), jayco have done their homework on this one.
 

BUSH PALACE

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Sep 4, 2011
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your ID plate on the van should show the cold tyre pressure and they do vary immensely from one van to the next, my advice is to run to that pressure and stick with the same rubber as what was factory fitted (should be light truck rated for most vans anyway), jayco have done their homework on this one.
Sorry Dave beg to differ , pressure recommended on ours was way under pressure , tyres looked / felt flat and were NOT light truck configuration , mags were only rated at 760kg per wheel on a ob model , sorry but failedcon their homework here !!!!!
 

achjimmy

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Jan 24, 2011
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We were lucky enough to get firestone destination ATs fitted from Jayco. They seem excellent quality. I run them over inflation specs a bit as above and run a tyredog TPMS on the van tyres as well. When they need replacing I will be going with 16" sunrayasia rims and suitable 16" AT LT tyres. The load rating on the 16's is just so much higher than most offerings in 15's
 

DaveS

Active Member
Jan 10, 2014
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Sorry Dave beg to differ , pressure recommended on ours was way under pressure , tyres looked / felt flat and were NOT light truck configuration , mags were only rated at 760kg per wheel on a ob model , sorry but failedcon their homework here !!!!!
is that 10" brakes on yours ?
 

Sarah n Matt

New Member
Sep 24, 2013
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With regards to the tyre pressure, can any one shed some light on what the go is with the green caps (filled with nitrogen) how do you check the pressure and if it needs topping up where/how do you do it ???
 

achjimmy

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Jan 24, 2011
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With regards to the tyre pressure, can any one shed some light on what the go is with the green caps (filled with nitrogen) how do you check the pressure and if it needs topping up where/how do you do it ???


Just ignore them and treat it as you would a normal tyre. N is a great advantage on a racing car, but little else. The advantage with N is the pressure doesn't vary as much as with normal Air. Best thing to do is try and make sure the air is filtered and dry. Moisture in air is the biggest cause of varying Presure
 

Drover

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Nov 7, 2013
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Good thread the OP should be a sticky......................................Have to agree with Bushpalace, Jayco didn't do their homework with tyres, my 14.44.3 had 195-70x 15 tyres which were load rated for 900kgs, plate said 450kpa (65psi), the GVM for mine is 1800 so that means the tyres were running at max, now thats not real smart, got 2 ton axles and 1 ton rims and it now has tyres which are rated at 1200kg each, 225-70 x 15, more than enough for my little rig and better than the skinny wheel barrow jobs it had from the factory. Ride way better, as a Truckie I've changed enough of the damn things to know the signs, I don't want to be having to on the road with a van, thats just one big pain.
 
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Colsar

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May 10, 2014
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your right coast runner five years seems the magic number, curious to know what date was on the tyre and if it was the original from jayco? if so what year was your van and does the tyre date correspond.
 

chartrock

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Sep 26, 2010
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Good thread the OP should be a sticky......................................Have to agree with Bushpalace, Jayco didn't do their homework with tyres, my 14.44.3 had 195-70x 15 tyres which were load rated for 900kgs, plate said 450kpa (65psi), the GVM for mine is 1800 so that means the tyres were running at max, now thats not real smart, got 2 ton axles and 1 ton rims and it now has tyres which are rated at 1200kg each, 225-70 x 15, more than enough for my little rig and better than the skinny wheel barrow jobs it had from the factory. Ride way better, as a Truckie I've changed enough of the damn things to know the signs, I don't want to be having to on the road with a van, thats just one big pain.

Hi Drover, I raised this point a few years back when I first picked up our 14 footer here. I must admit I have not had any real problems but one tyre did show a problem recently with a small hole in the sidewall and a ring around the whole tyre in line with the hole.
dsc_5664-jpg.21025

It has been replace with a new one of the same type.
 

Holden_man

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Aug 21, 2012
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We were lucky enough to get firestone destination ATs fitted from Jayco. They seem excellent quality. I run them over inflation specs a bit as above and run a tyredog TPMS on the van tyres as well. When they need replacing I will be going with 16" sunrayasia rims and suitable 16" AT LT tyres. The load rating on the 16's is just so much higher than most offerings in 15's
@achjimmy how do you find the Tyredog's, do you run the extra receiver/transmitter?
 

Drover

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Nov 7, 2013
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That didn't look nice @chartrock, I would have liked to put on a set of snazy looking off road tyres but the extra expense for a tyre that just follows wasn't justified, would have looked cool though so it's got a chunky highway pattern.
 

achjimmy

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Jan 24, 2011
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@achjimmy how do you find the Tyredog's, do you run the extra receiver/transmitter?

Hi mate sorry missed this. Yeah there pretty good. I think the actual calibration has gone out a little now a few years on. But they still do the primary job of alerting you to a drop in pressure or raise in temp. I have the 6 wheel system designed for US dualies etc so it doesn't run a relay. Never had an issue because of it either .
 

Holden_man

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Aug 21, 2012
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Hi mate sorry missed this. Yeah there pretty good. I think the actual calibration has gone out a little now a few years on. But they still do the primary job of alerting you to a drop in pressure or raise in temp. I have the 6 wheel system designed for US dualies etc so it doesn't run a relay. Never had an issue because of it either .
Thanks Jim, good to hear, been thinking about putting a unit in for the Panda.