Hi All
What is the correct tyre presure for 265/75R16 BFGoodridge A/T for normal everyday use on tar roads in the city on a SWB Gen 3 Pajero.
I'm currently using 2.2 bar, but everybody has different opinions which ranges between 2 -2.8 bar
Your comments would be appreciated
I also run mine on 2.2 Front and 2.4 rear but I have LWB with alot of crap always carried inside 
CATS
CATS
2009 Pajero 3.2 DiDc Lwb GLS (Gen4) - Casper (Starting to grow on me)
2001 Pajero 3.2 DiD Lwb GLS Manual (Gen3) - Snoopy (SOLD but not forgotten)
2008 Pajero 3.2 DiDc Lwb GLS Auto (Gen4) - Silvester (SOLD)
2001 Pajero 3.2 DiD Lwb GLS Manual (Gen3) - Snoopy (SOLD but not forgotten)
2008 Pajero 3.2 DiDc Lwb GLS Auto (Gen4) - Silvester (SOLD)
I cannot remember where I read this:
Take chalk and draw a line across your tires. Drive forwards a couple of tire turns and inspect the remaining chalk.... More chalk on the inside means under inflated, more chalk on the outside means over inflated, even wear of chalk across tire means right amount of air.
I havent tried this method yet.... let us know
Take chalk and draw a line across your tires. Drive forwards a couple of tire turns and inspect the remaining chalk.... More chalk on the inside means under inflated, more chalk on the outside means over inflated, even wear of chalk across tire means right amount of air.
I havent tried this method yet.... let us know
I firmly believe in the 4PSI rule. It is a bit tedious, but once figured out, it works well.
4PSI = 0.275bar = 27.5 kPa
There are so many variables, such as tyres type and size, load, temperature, road surface, etc. that a blanket pressure does not always give the ideal answer.
The 4PSI rule works like this:
Tyres cold.
Choose a pressure.
Drive until tyres reach operating temp (the time/distance will vary).
Measure the pressure, and compare with the 'cold' pressure.
If it has risen by ±4PSI, it's correct.
If it has risen by less than 4PSI, the tyres are over-inflated.
If it has risen by more than 4PSI, the tyres are under-inflated.
4PSI = 0.275bar = 27.5 kPa
There are so many variables, such as tyres type and size, load, temperature, road surface, etc. that a blanket pressure does not always give the ideal answer.
The 4PSI rule works like this:
Tyres cold.
Choose a pressure.
Drive until tyres reach operating temp (the time/distance will vary).
Measure the pressure, and compare with the 'cold' pressure.
If it has risen by ±4PSI, it's correct.
If it has risen by less than 4PSI, the tyres are over-inflated.
If it has risen by more than 4PSI, the tyres are under-inflated.
Gerhard Fourie
If you want to shoot somebody, make sure you aim at his head, not your own foot.
Me
If you want to shoot somebody, make sure you aim at his head, not your own foot.
Me
I like that rule.... Will have to try that together with the chalk 
Site Admin
Now having a tyre pressure monitor it is easier to follow this rule...
It also highlights the fact that people are much more inclined to overinflate the tyres...
What is interesting to note that when tyres are properly inflated the temperature change between a cold and warm tyre is not that much, maybe 8 degrees
It also highlights the fact that people are much more inclined to overinflate the tyres...
What is interesting to note that when tyres are properly inflated the temperature change between a cold and warm tyre is not that much, maybe 8 degrees
Simon Bloomer
Hi...
If you have a look at your tyre side-wall, you should find the specification from the manufacturer. You can run at around 70% of the recommended pressure to compensate for tyre heat.
Technically, you can also apply the 4PSI rule as explained before.
Whether it's 2.2 or 2.4 is ultimately up to your preference and terrain covered.
If the road conditions are terrible, like the border between the Free-State and KZN, a slightly less inflated tyre will be more suitable.
If you are going to cruise around in Menlyn, you can run a higher pressure.
There is no exact answer to this question.
All the best.
Cheers
If you have a look at your tyre side-wall, you should find the specification from the manufacturer. You can run at around 70% of the recommended pressure to compensate for tyre heat.
Technically, you can also apply the 4PSI rule as explained before.
Whether it's 2.2 or 2.4 is ultimately up to your preference and terrain covered.
If the road conditions are terrible, like the border between the Free-State and KZN, a slightly less inflated tyre will be more suitable.
If you are going to cruise around in Menlyn, you can run a higher pressure.
There is no exact answer to this question.
All the best.
Cheers
AFAIK, the tyre shows the maximum allowed pressure. IIRC my BFGs said that figure was 4.5kPa?debeer wrote: If you have a look at your tyre side-wall, you should find the specification from the manufacturer. You can run at around 70% of the recommended pressure to compensate for tyre heat.
My Touareg's low profiles allow something like 4.5kPA max.
Even at 70% of that,the ride will be very hard!
The 'correct' tyre pressure is a function of:
- size (dia, aspect ration and width) of the tyre
- construction of the tyre (the more it flexes, the hotter it gets)
- load
- speed (higher speeds cause higher temperatures)
- terrain (the more it flexes, the hotter it gets)
- driving style (making the tyre flex)
Gerhard Fourie
If you want to shoot somebody, make sure you aim at his head, not your own foot.
Me
If you want to shoot somebody, make sure you aim at his head, not your own foot.
Me
Site Admin
Recommended tyre pressure is vehicle specific and to a lesser extent the tyre size and very little to do with the tyre itself.. and as gerhard says, this is the maximum pressure written on the sidewall.debeer wrote: If you have a look at your tyre side-wall, you should find the specification from the manufacturer. You can run at around 70% of the recommended pressure to compensate for tyre heat.
Simon Bloomer