Thread: Tyre pressures

I would imagine the guys in LR Experience coarse would be able to tell you the offroad pressures, as for road pressures your tyre placard has that on the inside of the drivers door, there a good starting point.

As an excample, placard pressures for our D4 18" rims are;

29psi front, loaded and unloaded

38psi rear unloaded 44psi loaded

I run onroad and I'll leave it this way unless I'm doing more than 100ks of dirt;

36 front loaded and unloaded

38psi rear unloaded

44psi loaded

If I'm doing a lot of dirt, I'll drop my pressures at least 8 to 10psi for a basic gravel road loaded, if it turns rocky I will lower them a bit more, but not a lot maybe down to 30psi in the rear, and I'll leave the front alone, but again it all depends on how long you're offroad.

If your destination isn't that far on the dirt, just leave them and adjust your speed(ie) slow down.

Originally Posted by Redback

....just leave them and adjust your speed(ie) slow down.

I have the stock 19" Wranglers and only drop pressures on sand (circa 16psi). All else is at road pressures and I lower my speed and pick my lines to suit. Has worked for me so far.

Originally Posted by mfpoli

I have the stock 19" Wranglers and only drop pressures on sand (circa 16psi). All else is at road pressures and I lower my speed and pick my lines to suit. Has worked for me so far.

On most ocassions I don't lower pressures and adjust the speed to suit, but I will if I know there will be steep sections, regardless of the distance, especially if I'm loaded and for us we tow as well, it really takes it's toll on tyres if you're scrambling for traction, not to mention the damage to the track and car.

Thanks guys.

Sorry about the late reply, I have been using the app on my phone and it isnt showing the replies to the post, so had to wait until the kids gave me the time to use the trusty laptop.

I figured the guys on the LRE course would give us that info, but I like to have a heads up before I go into those sorts of things.

In my RRC with both the 33's and stockys I only ever let the tyres down to 30Psi in the rear and 28Psi in the front and just drove to the conditions. So far I have never had a problem. I have also done a lot without touching the tyre pressures and only really had a fight in sandy sections.

The off-road work we have done in the D4 so far have been all highway pressures, 40rear 38 front. It didnt seem to effect the car, whether driving through mud, sand or rocky sections. Continues to amaze me..

I have read through both the RRC and D4 books and there isnt really much mentioned, just "Drive as slow as possible and as fast as necessary".

The trip through the Flinders will be a combination of road types, so dont want to be filling and deflating all the time, but we will be towing the Jayco for the majority so need a happy medium.

Thanks again!

Originally Posted by Konradical

Thanks guys.

Sorry about the late reply, I have been using the app on my phone and it isnt showing the replies to the post, so had to wait until the kids gave me the time to use the trusty laptop.

I figured the guys on the LRE course would give us that info, but I like to have a heads up before I go into those sorts of things.

In my RRC with both the 33's and stockys I only ever let the tyres down to 30Psi in the rear and 28Psi in the front and just drove to the conditions. So far I have never had a problem. I have also done a lot without touching the tyre pressures and only really had a fight in sandy sections.

The off-road work we have done in the D4 so far have been all highway pressures, 40rear 38 front. It didnt seem to effect the car, whether driving through mud, sand or rocky sections. Continues to amaze me..

I have read through both the RRC and D4 books and there isnt really much mentioned, just "Drive as slow as possible and as fast as necessary".

The trip through the Flinders will be a combination of road types, so dont want to be filling and deflating all the time, but we will be towing the Jayco for the majority so need a happy medium.

Thanks again!

I've done the Flinders a few times, I left my pressures at 30psi front and 36psi rear for the whole trip, I only had them at road pressures for the trip there and the trip home on the tar, so you deflate them once and re-inflate once.

I did the LRE course here in Perth and if it's the same over there then you'll find the guys probably don't even mention type pressures. It's more about know about global window lowering, 3 flashes on the indicator etc. I hope you get more out of it than I did. If you get the opportunity to do a GOE course, then do it. Your head will spin.

19/20" ?, have you got 2 sets of wheels?
Not off road but towing I just relied on the sticker on the door pillar and that seemed fine on 19"
Off road we ozzies love to drop tyre pressures because it works

We've only been on the beach once since getting the D4 a couple of months ago and dropped the pressures to around 25psi front and back. Car went well but I would definitely go lower if down at places like Callcup or Bornholm.
No way would you get up those hills with road pressures or anywhere near them.
Drive to the conditions and lower pressures/speed to avoid damage to you and the vehicle.
AlanH.