Tyre pressures

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Oct 19, 2019 | 03:19 PM

powerhouse

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From: Ireland

Tyre pressures

So my 295/30/20 came off as down to the legal requirement but wear was perfect, even across each tire, I was running 32psi , should I run the new size of 305/30/20 on the same pressure

Oct 19, 2019 | 03:33 PM

Nati

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From: Cincinnati

specification is 37, but I don't think that's what you are asking.

Oct 19, 2019 | 03:35 PM

powerhouse

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Quote:

Originally Posted by Nati

specification is 37, but I don't think that's what you are asking.

yea 37 but IMO thats very solid

Oct 19, 2019 | 05:38 PM

Unhingd

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Quote:

Originally Posted by powerhouse

So my 295/30/20 came off as down to the legal requirement but wear was perfect, even across each tire, I was running 32psi , should I run the new size of 305/30/20 on the same pressure

The difference in volumetric displacement between the two tire sizes is not sufficient to warrant a change to your preferred tire pressure.

Oct 19, 2019 | 10:44 PM

Luc Lapierre

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From: Vancouver, BC, Canada

A timely opportunity for me to piggyback onto this topic:

What pressure should I use for 245/45/19?
These are my winter tires.

Oct 20, 2019 | 05:01 AM

scm

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Quote:

Originally Posted by Luc Lapierre

What pressure should I use for 245/45/19?
These are my winter tires.

Interestingly, Jaguar recommends 245/40 for 19" (245/45 for 18"s), but regardless it's 36 psi for all winter tyres sizes.

Oct 22, 2019 | 11:36 PM

Luc Lapierre

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Quote:

Originally Posted by scm

Interestingly, Jaguar recommends 245/40 for 19" (245/45 for 18"s), but regardless it's 36 psi for all winter tyres sizes.

Maybe because it's closer to OEM diameter? I think it's approx -1% relative to stock 20-inch setup. 245/45/19 is approx +2% iirc. Many have reported that the fender clearance is fine, however.