blue beasty said:
But you do not own a Landy :doh:

You've made a mistake, fair enough, we all do and me more than most but PLEASE STOP TRYING TO PERSUADE SOMEONE TO DRIVE WITH DANGEROUSLY HIGH TYRE PRESSURES! :mad:
Click to expand...

I didn't advise anyone I was disagreeing with you on a lower psi for the fronts, and used mine as a comparsion:rolleyes:

On your defenders if you weighed each axle seperate the front will weigh more because a engine is there, so front should have a bit more air on the fronts than the back
 
For general (varying load) use I run mine at around 30 front 38 rear, for a long journey loaded up to 45 rear.

The 7.50 ZXL's I used to run needed 50 with a ton in the back. There is no definative guide as it depends on your set-up but every guide will tell you the same.....higher on the back
 
Thor1950 said:
I didn't advise anyone I was disagreeing with you on a lower psi for the fronts, and used mine as a comparsion:rolleyes:

On your defenders if you weighed each axle seperate the front will weigh more because a engine is there, so front should have a bit more air on the fronts than the back
Click to expand...

sorry but you are wrong.
 
Not many standard pumps would get that high would they? A halfords one would **** a brick. Steering at 80psi would be skitish.
 
Thor1950 said:
That is for skinny tyres what happens if you got fat one's, 265's 0r 285's??????
Click to expand...

The OP has 235's. Wider tyres don't change the dynamics between front and back.

Show me some evidence that anyone anywhere (other than you) recommends running with higher pressure in the front of a Fender or :your_wrong:
 
Thor1950 said:
That is for skinny tyres what happens if you got fat one's, 265's 0r 285's??????
Click to expand...

The vehicle manufacturer calculates and tests the recommended tyre pressures based on vehicle and axle weights.

The tyre manufacturer also calculates and tests the tyre listing the working pressure range and the safe maximum pressure based on the tyre construction.

Neither the width of the tyre nor the thickness of the driver should lead to any major variation from the recommended pressures.


 
brian47 said:
The vehicle manufacturer calculates and tests the recommended tyre pressures based on vehicle and axle weights.

The tyre manufacturer also calculates and tests the tyre listing the working pressure range and the safe maximum pressure based on the tyre construction.

Neither the width of the tyre nor the thickness of the driver should lead to any major variation from the recommended pressures.
Click to expand...

seldom will the 2 calculation be the same then. So which do you use then. Defender that are 20 year old using new tyre engineering should you not use that info instead of 20yr plus old info from vehicle manufacture
 
Thor1950 said:
seldom will the 2 calculation be the same then. So which do you use then. Defender that are 20 year old using new tyre engineering should you not use that info instead of 20yr plus old info from vehicle manufacture
Click to expand...

So are you saying landrover are wrong?
 
goonarmy said:
So are you saying landrover are wrong?
Click to expand...

if info is for a old one yes, should be using the recommendation from the info box on the tyres. Mine has a minimum and max PSI on the damn things and owners manual give PSI according to how it is loaded and what you are towing.
 
Thor1950 said:
if info is for a old one yes, should be using the recommendation from the info box on the tyres. Mine has a minimum and max PSI on the damn things and owners manual give PSI according to how it is loaded and what you are towing.
Click to expand...

ffs You've been out in the midnight sun for too long!

If you check again, you'll find that the vehicle manufacturer's recommended pressures as listed in the owner's manual will fall within the working pressure range of the tyre. If it doesn't then you're on the wrong tyres.

Nothing to do with the age of the vehicle, as far as I'm aware, a kilogram or even a ton weighed exactly the same twenty years ago as they do now. Pounds per square inch haven't changed either.

Just because the top end of the tyre's working pressure range gives you a figure of 80 psi it doesn't mean that you have to run them at that pressure.

Run your tyres at the pressure as recommended by the vehicle manufacturer. Failing that, tell me where you're going to be driving so that I can be somewhere else.


 
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