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Re:What tyre psi you running???

GeorgeC
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28 Jul 2020 19:27 - 28 Jul 2020 19:29 #225802 by GeorgeC

Replied by GeorgeC on topic What tyre psi you running???

Lambert wrote: The tyre will have a maximum load at a maximum pressure written on the side-walls.
Either using the maximum axle weights off the vin or actually measuring the weight on each axle you can use maths to work out the pressure from the maximum figures on the tyre.

Well said Lambert! Also the tyre manufacturer can give you another number than will confirm all the above, its the Static Loaded Radius. I quote from an email from Bridgestone for the stock Gen 4 195 80R 15 Tyre: "Static Loaded Radius = 315mm +6, -10."

For my Jimny I have settled on 22psi for left front & rear and 22.5psi for right front & rear, at 4 degrees C, no TPMS. I have yet to measure the Static Loaded Radius at these pressures.

Last edit: 28 Jul 2020 19:29 by GeorgeC.

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Phattaff
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29 Jul 2020 08:49 #225815 by Phattaff

Replied by Phattaff on topic What tyre psi you running???

Cheers all for your input. Some very tech answers there, as I'm a bit stupid i will go for 21 front and 22 rear

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Roger Fairclough
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29 Jul 2020 10:08 #225818 by Roger Fairclough

Replied by Roger Fairclough on topic What tyre psi you running???

To GeorgeC

Why are you running different tyre pressures left to right?

Roger

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saxj
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29 Jul 2020 10:28 #225819 by saxj

Replied by saxj on topic What tyre psi you running???

mlines wrote: 20 psi for me

I also run 20PSI on road. 9 off-road

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GeorgeC
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29 Jul 2020 18:54 #225833 by GeorgeC

Replied by GeorgeC on topic What tyre psi you running???

Roger Fairclough wrote: To GeorgeC: Why are you running different tyre pressures left to right? Roger

A good question. There is more weight over the right side of the car than the left with only the driver + fuel. This will be confirmed later when I measure the Static Loaded Radius of all four wheels.

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Jezz
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30 Jul 2020 20:38 #225873 by Jezz

Replied by Jezz on topic What tyre psi you running???

About 6 or 7 psi for me.

It's been fettled just a tad.

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Re:What tyre psi you running???

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