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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2625

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Standard Tyres: what pressure?
Hi all

What tyre pressures do you guys run on an unladen 90 running stock standard tyres?

The manual says F/R: 2.1/2.6, but 2.1 at the front seems too low to me considering the weight of the engine, and 2.6 at the back seems too high?

I am tending towards F/R: 2.3/2.5 - what do you guys think?
Post #24752 21st Feb 2010 9:06am
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jlerra



Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

Gibraltar 2007 Defender 90 Puma 2.4 XS CSW Java Black
Tyre Pressures
Hia,
Stick to the manual directives - the tyre pressure have been worked out specifically for the tyre specification and the laden weight of the vehicle with the exception of driving in sand when they have to be deflated for grip then reinflated for road use.
If you don't keep to the spec in the manual you stand the chance of rapid tyre wear!
Tra-la-lu

'El Pepe Flamenco' Thumbs Up JLS
'El Pepe Flamenco'
Post #24774 21st Feb 2010 11:40am
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ralton



Member Since: 04 Feb 2010
Location: Durban
Posts: 153

South Africa 2007 Defender 90 Puma 2.4 SW Zermatt Silver
I run mine at 1.9-2.0 all-round. I find it a smoother ride, not too soft, just right...
Also, i haven't noticed any uneven wear after the 65000km at that pressure.
Cheers
Post #24779 21st Feb 2010 2:13pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2625

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Thanks guys

on an unrelated note, everytime I brake, the puma pulls sharply to the left. There is less resistance in the steering wheel when turning left than when turning right. and the steering wheel's centre is to the left by about 10-20 degrees when going straight.

What could be the issue there?
Post #24781 21st Feb 2010 2:25pm
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austen



Member Since: 10 Mar 2008
Location: Sydney
Posts: 52

Australia 2008 Defender 110 Puma 2.4 SW Stornoway Grey
I too, find it difficult to run the fronts so soft. I run mine at 38/44, but the dealer always resets them to 42/42!
Austen. Rover 12 1935
Rover 20 1940
Rover 100 1960
Defender TDC1 2008
FL2 TD4 2008
Post #24813 22nd Feb 2010 6:18am
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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 538

France 2009 Defender 90 Puma 2.4 SW Alaska White
Re: Standard Tyres: what pressure?
Naks wrote:
Hi all

What tyre pressures do you guys run on an unladen 90 running stock standard tyres?

The manual says F/R: 2.1/2.6, but 2.1 at the front seems too low to me considering the weight of the engine, and 2.6 at the back seems too high?

I am tending towards F/R: 2.3/2.5 - what do you guys think?


Funny you mention this, after a few months driving my car I decided this weekend to check the tyres pressure and what I found is quite surprising to say the least. Apparently, from factory (or at least from delivery) the tyres pressure was 3.5/3.6 bar F/R, ie way too much compared to what the manual says!

I deflated to 2.1/2.6 as per the instructions and get a much smoother ride. Why those tyres were inflated to that level is beyond me.
Post #24824 22nd Feb 2010 9:18am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2625

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Re: Standard Tyres: what pressure?
ofourdan wrote:
Apparently, from factory (or at least from delivery) the tyres pressure was 3.5/3.6 bar F/R, ie way too much compared to what the manual says!


No ways, that's what I found as well, spent 15 minutes just deflating them to the correct pressures!

And the spare tyre was inflated to over 4.2!!! No wonder we couldn't fit the spare wheel cover at the dealership Rolling Eyes
Post #24825 22nd Feb 2010 9:24am
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Niel



Member Since: 14 Sep 2009
Location: Sandton
Posts: 27

South Africa 2009 Defender 110 Puma 2.4 SW Alpine White
rolton, i also had mine on 2 bar(when i received the defender it was over 3bar) but then at about 8k i did a 5way tire ratation and the guys at the tyre place showed me some signs of flat spots starting?? so now i am up to 2.4 bar all round Puma 110 sw White
No extras yet.
Post #24836 22nd Feb 2010 12:28pm
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Eduardo



Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2109

Chile 2007 Defender 110 Puma 2.4 SW Stornoway Grey
Hi there

According to the manual should be 2 bars (30 psi) in front and 3.1 bars (45 psi) in the rear
With standard tires I use in the front the correct one, but in the rear I use 2.4 (35 psi). Less than specify the manual, but with more pressure the truck get very bumpy, in special without load.

Cheers Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

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Post #24837 22nd Feb 2010 12:39pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2625

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Eduardo wrote:
According to the manual should be 2 bars (30 psi) in front and 3.1 bars (45 psi) in the rear


erm, pasted from the manual I received from LR, and I don't see the figures you are quoting:


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Post #24838 22nd Feb 2010 12:44pm
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Eduardo



Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2109

Chile 2007 Defender 110 Puma 2.4 SW Stornoway Grey
Embarassed Embarassed Embarassed

That was for the 110 - sorry Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge
Post #24839 22nd Feb 2010 12:46pm
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ralton



Member Since: 04 Feb 2010
Location: Durban
Posts: 153

South Africa 2007 Defender 90 Puma 2.4 SW Zermatt Silver
Niel wrote:
rolton, i also had mine on 2 bar(when i received the defender it was over 3bar) but then at about 8k i did a 5way tire ratation and the guys at the tyre place showed me some signs of flat spots starting?? so now i am up to 2.4 bar all round


Hi there - was that on your 110? (or on a 90?)
Cheers
Post #24843 22nd Feb 2010 1:17pm
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Niel



Member Since: 14 Sep 2009
Location: Sandton
Posts: 27

South Africa 2009 Defender 110 Puma 2.4 SW Alpine White
110 Puma 110 sw White
No extras yet.
Post #24845 22nd Feb 2010 1:19pm
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alantd



Member Since: 14 Dec 2008
Location: Northamptonshire
Posts: 1513

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Tonga Green
I was running mine too high. Subjectively they looked to be properly inflated (the quoted manual figures looked too soft and saggy). After 5k, however, I was wearing the middles down and not the edges. When the car was serviced, the dealer knocked the pressures back to the quoted levels and it now drives a lot better Embarassed One that started out as a 2.4 TDCi 110 XS
+ New Defender 110 First Edition
Post #24919 23rd Feb 2010 9:51am
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