Bigdee6480

New Member

• Sep 19, 2019

• #1

Ive just went and bought a new set of 265 70 r16 bfg goodrich a/t tyres for my disco 2 and i was just wondering what is a comfortable psi to set them at, ive got 36 psi in them and there rock hard and real bad handling on the road, much help would be great thanks

 

Bobdog

Well-Known Member

• Sep 19, 2019

• #2

Bigdee6480 said:

Ive just went and bought a new set of 265 70 r16 bfg goodrich a/t tyres for my disco 2 and i was just wondering what is a comfortable psi to set them at, ive got 36 psi in them and there rock hard and real bad handling on the road, much help would be great thanks

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Should have less in the front. Try 30psi.

 

Stanleysteamer

Well-Known Member

Full Member

• Sep 20, 2019

• #3

I think you'll find it in the hand book, or did you go with that? There is definitiely a diff front to back.

 

sierrafery

Well-Known Member

• Sep 20, 2019

• #4

Here are the recommended pressures... and tyre sizes too for which the vehicle's engine management and all the other electronic systems were ''calibrated" from factory, exceeding with more that 5% those dimensions without proper tuning for that will lead to an unhappy end for one reason or another

 

Michalis Karatzis

Active Member

• Sep 21, 2019

• #5

sierrafery said:

exceeding with more that 5% those dimensions without proper tuning for that will lead to an unhappy end for one reason or another

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How do you do a proper tuning when using different tire size?

 

sierrafery

Well-Known Member

• Sep 21, 2019

• #6

Not easy and it's a too long story, i had many posts about that... in a nutshell the cooling has to be enhanced and the fuel map addapted to the VSS(vehicle speed signal) input as to keeo the torque and EGT within decent limits, addapt the diffs or transfer box ratio to them eventually... which means that with big tyres an EGT gauge is compulsory.