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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
  
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| Caravan - twin axle tyre pressures |
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Hi, Does anyone understand the formula for deciding the correct tyre pressures on a twin axle by using the MTPLM and the info shown on the tyre please. Ive looked at two different explanations and are getting two different answers. My caravan MTPLM = 1600KG. The tyres are 165R 13C (94/93 N) with a max load (single) of 670Kg @ 450KPA Max 65PS cold On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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 24th Jul 2012 12:04 pm |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10361
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isnt the pressure in your handbook?
ours are 42psi on a Bailey Olympus 620-6 twin axle running on 185/65x14 tyres with a MTPLM of 1649kg
Al Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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| 24th Jul 2012 12:32 pm |
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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
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Hi Al, Don't have the handbook i'm afraid and can't buy a copy anywhere. Mine is an Avondale Argente 640-6 and using one of the formulas I found it worked out to 38.8 (39) Psi so not that far from your 42, but it just seems a bit on the low side to me. I usually stick 40 Psi in anyway but as i'm taking it to Europe thought i'd better get it right as we will be upto max load 
Chris On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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| 24th Jul 2012 1:01 pm |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10361
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yep - understand - I think 42psi seems to be average for most of the big T/A's, as I'm sure there was a thread a while back on this.
I know Avondale aren't in business any more, but Raymond James caravans in Cov used to be one of their biggest dealers, and if I recall, are now located in the old Avondale premises. You could try calling their service center and asking.
Al Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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| 24th Jul 2012 1:18 pm |
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muddywheels4wd
Member Since: 16 Dec 2010
Location: East Riding of Yorkshire
Posts: 1681
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38 On my crusader 
Try http://www.caravantalk.co.uk/community/ Wanted a Series 2 LR since childhood but previously owned MY16 Disco Sport HSE TD4 Auto, MY13 RR Sport Black Edition TDV6 Auto, MY10 RR Sport HSE TDV6 Auto, 2007 Freelander 1 Freestyle TD4 Soft Top, 2009 Freelander 2 GS TD4 Auto, 2007 Freelander 2 GS TD4, 2004 Disco 2 Metropolis Auto, 2002 Disco 2 GS, 2000 Freelander 1 SE TD4 SW
Still hoping for a S2 one day!
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| 24th Jul 2012 1:40 pm |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10361
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just found this on caravan talk:
Several members have recently been looking for Avondale manuals.
We AAOCC (formely All Avondale Owners Club)were contacted last year by a company that hold many of the manuals on file and are happy to print and post our for a modest cost. You can contact them at;
Preset Graphics
01332 549278
presetgraphics@btconnect.com
did a quick search and there doesnt appear to be any entries for Argent tyre pressures
Al Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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| 24th Jul 2012 1:53 pm |
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muddywheels4wd
Member Since: 16 Dec 2010
Location: East Riding of Yorkshire
Posts: 1681
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You could join the forum and ask other members if they have the info Wanted a Series 2 LR since childhood but previously owned MY16 Disco Sport HSE TD4 Auto, MY13 RR Sport Black Edition TDV6 Auto, MY10 RR Sport HSE TDV6 Auto, 2007 Freelander 1 Freestyle TD4 Soft Top, 2009 Freelander 2 GS TD4 Auto, 2007 Freelander 2 GS TD4, 2004 Disco 2 Metropolis Auto, 2002 Disco 2 GS, 2000 Freelander 1 SE TD4 SW
Still hoping for a S2 one day!
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| 24th Jul 2012 2:03 pm |
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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
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Thanks guys that has put my mind at rest , i'll go with the 38psi as it backs up the formula i tried and I will also follow up on the other suggestions On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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| 24th Jul 2012 2:27 pm |
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D4mation
Member Since: 29 Jul 2011
Location: Ruralshire
Posts: 593
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You must have used this formula -
MTPLM x Max PSI / Max Tyre Load x Number of Tyres
1600 x 65 / 670 x 4 = 38.8 psi
I found the formula on CaravanTalk some while ago. MY12 D4 HSE Ipanema Sand
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| 24th Jul 2012 11:15 pm |
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pgerman
Member Since: 16 Jun 2008
Location: Milton Keynes
Posts: 68
 
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Highbayrack,
PM me your home address and I'll send you a copy of my handbook. I have the Avondale Windsor 640-6 which is the same as yours bar a few bits and pieces. Just taken a look and my handbook covers the Argente as well as the Windsor.
Regards
Paul
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| 24th Jul 2012 11:30 pm |
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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
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Hi Paul, PM sent On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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| 26th Jul 2012 7:41 am |
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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
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D4mation wrote:You must have used this formula -
MTPLM x Max PSI / Max Tyre Load x Number of Tyres
1600 x 65 / 670 x 4 = 38.8 psi
I found the formula on CaravanTalk some while ago.
Thanks, thats the formula I used and will go with that, it was just that the dealer origionally told me 42 psi and it never felt right. By the way, I see we both have the best color D4's On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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| 26th Jul 2012 8:11 am |
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bambi
Member Since: 10 Apr 2009
Location: south yorkshire
Posts: 2059
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From a posting on caravan talk 165/80/13 pressure is 35psi, posted by swift caravan representative. So looking at this answer and the others 35-40 psi you ain't gunna be far out.
My hymer runs at 60psi for comparison.
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| 26th Jul 2012 11:04 am |
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