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Re:Tyre Pressure for 215/75/R15 ?

Lambert
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The quickest Jimny in Harrogate...(that I own)

27 Jan 2020 05:04 - 24 Oct 2022 17:29 #217725 by Lambert

Replied by Lambert on topic Re:Tyre Pressure for 215/75/R15 ?

As it's a gen4 the offset of the factory wheels is actually negative 22,( actually we now know that all 3 and 4 wheels are et5 and interchangeable) so with a negative 13 rim you're moving the wheel inboard 9mm which could be ok but might actually cause rubbing when at full steering lock or compression. Are you firm on having a complete second set of wheels and tyres because the 215s will fit the factory wheels and you would have one less complication.

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Last edit: 24 Oct 2022 17:29 by Lambert.

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Busta
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29 Jan 2020 18:27 #217820 by Busta

Replied by Busta on topic Tyre Pressure for 215/75/R15 ?

I run 215/75 r15 BFG Muds.
I run them at 21psi on the road.
16-19psi off-road.
As low as 10psi on soft peaty ground or sand.

As a rule of thumb, the larger the volume of the tyre, the lower the pressure. Fitting bigger tyres and running them at higher pressures than standard is a recipe for a slipped disc!

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B3Hulk
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30 Jan 2020 05:04 #217828 by B3Hulk

Replied by B3Hulk on topic Tyre Pressure for 215/75/R15 ?

Thanks everyone for replying.

Once I get the KO2's on the Gen 4 Jimny, I will play around with the tyre pressure.

I was thinking between 20-24 psi and looks like that is the what everyone is generally doing.

I have contacted BFG and waiting for their thoughts as well.

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Lambert
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30 Jan 2020 05:28 #217831 by Lambert

Replied by Lambert on topic Tyre Pressure for 215/75/R15 ?

It is possible to calculate the exact number using the information on the sidewall of the tyre. It will state the maximum load the tyre can support at the maximum pressure it can contain. Therefore with the maximum axle weight of the car from the vin plate it is simply a matter of working that back into the pressure the tyre needs to support the load the car imposes.

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B3Hulk
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13 Feb 2020 05:39 - 13 Feb 2020 05:42 #218419 by B3Hulk

Replied by B3Hulk on topic Tyre Pressure for 215/75/R15 ?

I spoke with BFG directly and provided them with the Jimny 2019 Gen 4 PSI tyre pressure on the side of the door and they have provided me with this.

This is direct from the source. If you are running KO2 215/75/R15 on a Gen 4 Jimny

Last edit: 13 Feb 2020 05:42 by B3Hulk.

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Lambert
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13 Feb 2020 06:12 #218422 by Lambert

Replied by Lambert on topic Tyre Pressure for 215/75/R15 ?

Does this account for the weight of the Jimny as in did you give them the axle weights as well as the inflation pressure of the standard tyres because those pressures seem a bit high for a tyre with a load index of 100? Not saying that it is wrong just seems a bit arbitrary.

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One of the last 200ish of the gen3s, probably.
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Re:Tyre Pressure for 215/75/R15 ?

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