Submitted: Thursday, Jan 30, 2003 at 07:14
ThreadID: 3149 Views:12013 Replies:6 FollowUps:3
This Thread has been Archived
Hi need advise - have poptop and the compliance plate stated tyre pressure to be 65psi . the tyres also state 65psi so i presume that i should inflate them to 65psi. in conversation i was told that the pressure in a tandem caravan should be 50psi. what would you suggest and what problems would i have running at 50psi if 65psi was correct. thanks for your opinions regards peter
Back Expand Un-Read 0 Moderator

Reply By: Truckster - Thursday, Jan 30, 2003 at 09:13

Thursday, Jan 30, 2003 at 09:13
What sort of trailer? what sort of weights are you talking??

Better answers would be from the Campertrailer list ....458 members now!
AnswerID: 12136

Reply By: bruce - Thursday, Jan 30, 2003 at 09:44

Thursday, Jan 30, 2003 at 09:44
Peter ..we have a 17ft Avan dual axle poptop and we were adised by the dealer that we bought it from to run the tyres at 50lb psi..we have only done a cuple of trips with it as yet but all seems to be well with the tyres...cheers
AnswerID: 12138

Reply By: Member - Kevin - Thursday, Jan 30, 2003 at 11:15

Thursday, Jan 30, 2003 at 11:15
I run my caravan tyres (Kumho Roadventure AT 245/75 16) at 46 psi. Van weighs about 2000 KG fully laden with about 200 KG on the ball. 46 psi fits nicely with the Michellin 4 psi rule-of thumb and tyre wear seems okay to date - but tyres have done only about 3000 KM. Tyre states max load of about 1200 KG (from memory) per tyre is at 65 psi. In my setup each tyre is supporting about 900 KG.

Cheers - Kevin
AnswerID: 12145

Reply By: Jim - Thursday, Jan 30, 2003 at 16:01

Thursday, Jan 30, 2003 at 16:01
Required tyre pressure varies with the weight-carrying rating of the tyre (see the markings on the sidewall or talk to your tyre man), and the actuaL weight on each tyre (put the fully loaded van on a weigh-bridge - they will weigh it attached to the vehicle and unattached to give you the weight on the wheels and the actual weight on the ball). the compliance plate does not always give the accurate figures, for various reasons.
It is suggested that, once you have the actual weight on each tyre, add 20% extra weight on rough roads, and use that as the weight each tyre has to support. Most tyres give a load rating and the maximum weight rcommended recommended for that tyre. The more air in the tyre, the bigger load it can carry - i.e. a bigger tyre will carry more weight for a given pressure than a smaller one. Light truck tyres usually have stronger walls than a passenger tyre of the same size and can therefore handle a higher pressure and therefore more weight.
It is usually considered that pressures in van tyres over about 47psi cause more jarring to the vans innards than desirable, so if your tyres need more than that, talk to your tyre man. More information can often be found in Tom Olthoff's "caravan Clinic" in Caravan World.
Happy travelling.
AnswerID: 12176

Follow Up By: Member - Keith - Friday, Jan 31, 2003 at 21:05

Friday, Jan 31, 2003 at 21:05
Just one more suggestions following Jim's excellent advice - When you have the loads on each wheel from the weighbridge, call the relevant tyre company, ask for the tech dept, give them the details and request their advice as to correct pressure. After all, they made the tyre and should be able to give accurate advice.
FollowupID: 7123

Follow Up By: Jim - Saturday, Feb 01, 2003 at 09:12

Saturday, Feb 01, 2003 at 09:12
Agreed, Keith. Tables of weights per psi are also around - your tyre supplier may have some. I got some from a Bob Jane outlet.
FollowupID: 7139

Reply By: Member - Alan - Friday, Jan 31, 2003 at 15:25

Friday, Jan 31, 2003 at 15:25
Jim has said it all for you, however if you plan to go take your van off bitumen at all then on my Roadstar (tandem-tyres at 45psi with 2 tonnes, which is VERY kind to its innards) ran on 30psi on the rougher stuff BUT i\I kept the speed down to 65-75 kph. Back on the Hwy a GOOD compressor (ARB) SOON PUT THEM BACK tp 45psi. Never a problem or flat in 90,000kms
Safe and Happy Travelling
AnswerID: 12261

Reply By: PETER - Saturday, Feb 01, 2003 at 08:56

Saturday, Feb 01, 2003 at 08:56
thanks very much for your kind advice - i have some homework to do regards peter
AnswerID: 12328

Follow Up By: Victatwo - Thursday, Feb 13, 2003 at 20:44

Thursday, Feb 13, 2003 at 20:44
Hello Peter, have a 18 foot coromal dual axle with LT tyres have run them all at 35 psi for years and many 1000's kms bear in mind that tyres are part of the supension and need to flex to a degree to do their share of the work, having to go in excess of 40 or 50psi would suggest they are approaching their load limit and need that sort of psi, anyone out there feel inclined to agree????
FollowupID: 7645

Sponsored Links

Popular Products (9)