You look after yourself...Quote:
Originally Posted by Old Farang
We're heading back later in the year, will drop you a line when we know details.
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You look after yourself...Quote:
Originally Posted by Old Farang
We're heading back later in the year, will drop you a line when we know details.
I am sure there is a thread on here somewhere, I just cant find it. It works for me BUT I am mostly on sealed roads, AND it probably depends a bit on just what tyres you are running, amongst other things. I check them regularly before a long run and the current set of tyres are wearing evenly. I regularly get those that know more than me trying to tell me my tyres are half flat! They do look low when cold, but always come up 4 psi anywhere along the way when I check them.Quote:
Originally Posted by Toxic_Avenger
The trick seems to be to establish just what the starting pressure should be.
https://www.coopertires.com.au/media...-pressures.pdf
The 4psi rule is the tyre pressures should increase by 4psi from cold to hot. A "hot" tyre is a tyre that has been driven for an hour at a speed not less than 100km/h.Quote:
Originally Posted by Toxic_Avenger
You measure your cold pressure before you leave, after an hour you measure your pressure, if it has risen by 4psi then your starting cold pressure was correct. If it has risen by more than 4psi, then your starting cold pressure was too low, less than 4psi then it was too high. Do not adjust the pressure of a hot tyre, it will never be accurate, always do it cold. Play with pressures until you have the magic number of 4psi change in pressure.
So vehicle weight/load being carried has a fair bit to do with it i guess?
Does the 4psi rule indicate that the tyre has the correct contact patch?
I, like a couple of others here don't bother with tyre rotation anymore and have never been a fan of diagonal changes for the reasons given.
The fact that I run 235/85's on the 130 and the spares are 750's has nothing to do with it [bigsmile1]
It's a reasonable rule of thumb, Mitch.Quote:
Originally Posted by Toxic_Avenger
Moisture content of the air will throw things out, think of your on board air with no water seperator compared to a properly blown down industrial air compressor with a decent water seperator, or a dehydrator.
I think mine was throwing more water than air out the other day when it was raining.