<span class="highlight">Tyre</span> <span class="highlight">Pressures</span> B/Stone D694LT's 265/70 R16

Submitted: Saturday, Feb 12, 2011 at 19:33
ThreadID: 84302 Views:11525 Replies:8 FollowUps:11
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Hi all, anyone have experience with these on a dual cab Nav D22.tyre shop has set at 38psi all round, ride a little rough at front and way to hard/jumpy at rear. what would you recommend for the weekday work trips??
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Reply By: Member - Stephen L (Clare SA) - Saturday, Feb 12, 2011 at 20:00

Saturday, Feb 12, 2011 at 20:00
Hi Rat72

Not a Nav D22, but on my Prado, I run the 694 LT's 265/65 R17 at 32 psi front and rear. I then go down from there on dirt roads.


Cheers


Stephen
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Follow Up By: Member - Stephen L (Clare SA) - Sunday, Feb 13, 2011 at 11:54

Sunday, Feb 13, 2011 at 11:54
Hi Rat72

As you can see, you have received many different replies, some helpful and some that I would never personally try.

Please open this link from someone that lives out in the bush and does lots of tyre repairs from people that can not be told and run high tyre pressures.

http://www.pinkroadhouse.com.au/Pink/graphics/docimages/tyre-pressure-pdf.pdf

As Adam says people that do not listen to his free advise will find out the hard way.


Cheers

Stephen

ps I ran my tyres at 18 psi on the Anne Beadell and it made the biggest difference to ride comfort. The one that know better and still run high tyre pressures on the AB end up with vehicle damage.
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Follow Up By: Alloy c/t - Sunday, Feb 13, 2011 at 13:40

Sunday, Feb 13, 2011 at 13:40
Stephen ,your not the only one that lives in the bush and the pink roadhouse recomendations are fraught with an ulterior motive perhaps ? Much better to stick with the pressures the locals run day in day out or even the pressures that the minning companies demand drivers maintain on their vehicles , all high except for sandwork. Funny that vehicle and tyre manufacturers spend mega $ to find the best pressure /tyre combination then spend mega $ on testing in all conditions and then people take as gospel a resellers ulterior motive induced advise.
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Follow Up By: Member - Stephen L (Clare SA) - Sunday, Feb 13, 2011 at 14:07

Sunday, Feb 13, 2011 at 14:07
Hi Alloy

The Pink Roadhouse recommends that for one very good reason, to avoid tyre damage. For thinking that Adam has an ulterior motive perhaps is not right. Have a chat with Adam, that is all I can say

We can not bring mining vehicles into the topic. Firstly mine vehicles (I will only comment on SANTOS vehicles where my son works) are mostly try tops and are governed to a maximum speed of 80 kph. Every vehicles is fitted with GPS tracking data and anyone going over that speed limit is fined heavily from the company, that is fact and they have very stick guidelines that must be adhered to.

Nearly all heavy equipment is taken out by trucks, so most tray tops do not carry the weight that your tourist vehicle would carry on there usual holiday trip.

As for research, have you had a look at the Cooper Tyre book for tyre pressures??

They list all type of driving conditions, from sand to high speed dirt road they they don not recommend high pressures.

The Bridgestone site recommends a 20% pressure drop on dirt road and shows a good example of how tyres with lower tyre pressure will mould over a rock

As they say, each to there own, but I know what I use and it is not high pressures.

Cheers

Stephen
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Reply By: Ruffy-Dan - Saturday, Feb 12, 2011 at 20:42

Saturday, Feb 12, 2011 at 20:42
Silly tyre shop!

Closer to 30-32 will give you a more desirable ride and tyre wear

DAN
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Follow Up By: Rat72 - Saturday, Feb 12, 2011 at 22:27

Saturday, Feb 12, 2011 at 22:27
Thanks guys, i was thinking around 34, i'll give it a 32 and see how they go. makes more sense at these pressures.
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Reply By: Muntoo - Saturday, Feb 12, 2011 at 21:47

Saturday, Feb 12, 2011 at 21:47
HI mate, im shopping for these at the meoment for my BT50.

Could i ask the price you paid per tyre??

I've been quoted $309 fitted.

Cheers
AnswerID: 445226

Follow Up By: Rat72 - Saturday, Feb 12, 2011 at 22:29

Saturday, Feb 12, 2011 at 22:29
no, bargin them down to $280 F&B. Bridgestone even through one in for free cause the crap D693"s from the factory were shot at 25,000km.
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Follow Up By: Muntoo - Saturday, Feb 12, 2011 at 23:40

Saturday, Feb 12, 2011 at 23:40
Cheers mate.

Yeah $309 was at Bridgestone and Tyrepower wanted $320-$350.

I nearly choked.

My standard 693s are still good at 35,000kms but i when bullbar was put on the front end dropped. I drove 2500kms next day and it flogged out the front tyres. The outsides are buggered but centre and innerside is still good.

Bit of a bugger really.
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Reply By: 3gobush - Saturday, Feb 12, 2011 at 23:48

Saturday, Feb 12, 2011 at 23:48
Any thing less than 40 psi on dirt or the black stuff and you are kidding your self, this info comes from over 700,000 km of driving with them without a puncture.

98 % dirt roads and travelling.
AnswerID: 445238

Follow Up By: Rat72 - Sunday, Feb 13, 2011 at 00:03

Sunday, Feb 13, 2011 at 00:03
Ok, but with how weight on board. Empty i only have 440Kg on each rear tyre.
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Follow Up By: 3gobush - Sunday, Feb 13, 2011 at 00:08

Sunday, Feb 13, 2011 at 00:08
I have had them work with the roof rack on or off, the roof rack full or empty, the inside full or empty towing or not towing a trailer, it doesn't matter they just work well at 40psi, I have done the Ks to prove it.
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Follow Up By: Member - TonBon (NSW) - Sunday, Feb 13, 2011 at 07:41

Sunday, Feb 13, 2011 at 07:41
Yes i agree, i have the same tyres and run them at 40PSi all round for the normal daily driving. I was running them lower when i first got them and my fuel economy really suffered. Been on the car now for 40,000 k's, still have 60% tread with good even wear. They even did a 10,000 km desert trip (pressures lowered when necessary of course).
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Reply By: Member - Bucky - Sunday, Feb 13, 2011 at 04:46

Sunday, Feb 13, 2011 at 04:46
Rat 72
When we had our D22 I run 32 front & rear
I also put 2 full sandbags up the front of the tub to even the tyre weight.
( 1100kg's front and rear from memory )
The sand bags helped a lot, with the lowsy ride, but then again I had modified the rear springs, for height and ride as well

Buggered if I would run 40 "neck breaking" psi, in the rear, except it I carried a tub full of gravel, or soil, or something like that.

Cheers
Bucky
AnswerID: 445244

Follow Up By: Member - Bucky - Sunday, Feb 13, 2011 at 04:47

Sunday, Feb 13, 2011 at 04:47
Runs in the desert saw 22-25 all round on gravel roads, and 15 psi all round in the sand.
Never had a puncture.
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FollowupID: 717499

Reply By: Wilko - Sunday, Feb 13, 2011 at 07:53

Sunday, Feb 13, 2011 at 07:53
Hi Rat 72,

Ive got the same ones on my Pajero. I run 32 psi on the blacktop and for the occasional dirt stretch.

If I'm doing some longer/ rougher dirt, I'll drop them to about 25 psi. Its only an approx cause of the different weights on the car. I'm looking for a bit of sag and (when you push the car sideways) a bit of flex in the tyre wall.

No one pressure figure will give you what you want and you'll need to adjust the pressure to suit.

Cheers Wilko
AnswerID: 445246

Reply By: Alloy c/t - Sunday, Feb 13, 2011 at 08:36

Sunday, Feb 13, 2011 at 08:36
You want them to last you run them at the tyre placard pressures plus 2-4 psi and never lower unless on sand , your little bit of "rough ride" will disapear after the tyres are broken in [ 1-2 thousand klm].
AnswerID: 445250

Follow Up By: Jeffie - Sunday, Feb 13, 2011 at 10:22

Sunday, Feb 13, 2011 at 10:22
I agree somewhat - I have a 07 Navara D40 when I fitted the 694s was told to run them at 40psi and at 45psi when towing the caravan.
At first I found the ride to be annoying but after a while either I got used to the ride or they softened a bit.
Have done the CSR (mostly at 18psi) and towed the van(45psi) 15,000ks and tyres almost as new - no cuts,stratches or punctures.

Jeff.
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FollowupID: 717517

Reply By: Member - Duncs - Sunday, Feb 13, 2011 at 17:59

Sunday, Feb 13, 2011 at 17:59
There is more to consider than comfort when selecting tyre pressures. Too low will damage the tyre and compromise performance, too high will not only be uncomfortable but can be dangerous as well. Too high can also be damaging to the tyres.

My vehicle is different to yours but this will give you something to think on. I normally run about 36 to 38 psi on the road. When I do a long blacktop run in regional areas I increase that to 40 or 42 psi. This has always worked well, feels good and provides good performance, tyre ware and I have not had punctures or tyre damage at these pressures while on the road.

On a trip up the coast last year I decided to take an alternate route to avoid traffic. This route took me over some secondary sealed roads which were in poor condition. This made for an uncomfortable trip but when it started to rain it was like driving on ice. Scary stuff. I pulled over and dropped the pressures by 25% to about 34psi. It was more comfortable and a lot less scary.

I have a simple system for determining tyre pressures. I follow the tyre placard and run at the max pressure listed while driving around town. I bump this up by about 10 -20% when on a long trip on sealed roads. When I leave the highway I drop by 25% every time the road surface deteriorates. So assuming I am at 40psi on the highway I drop to 30 on good dirt, about 24 on poor dirt and about 18 on the sand. This is a guide not a rule. At each point I take notice of how the car is performing and adjust pressures up or down to suit.

I drive Pathfinders at work some of which have 694's the plackard says 36 and that is where I go. I guess the Pathy is probably a bit softer ride than the D22 but the plackard is the place to start.

Duncs
AnswerID: 445313

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