tyre pressure for van

Submitted: Sunday, Oct 02, 2011 at 14:27
ThreadID: 89341 Views:2648 Replies:5 FollowUps:7
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Hi all, could someone advise me at what tyre pressure I should have my van
tyres, its a Viscount aerolite... any help would be appreciated...
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Reply By: Roughasguts - Sunday, Oct 02, 2011 at 15:12

Sunday, Oct 02, 2011 at 15:12
First up how old are these tyres ? are they car tyres or light truck ?

AnswerID: 466578

Follow Up By: STAN C1 - Sunday, Oct 02, 2011 at 23:57

Sunday, Oct 02, 2011 at 23:57
Hi Rag, and Notso,
Sri i should have given more info, name of tyres are MaxMillers, they appear to have very little wear, Ive checked em with a tyre gauge and theyre showing a reading of 40psi , Im assuming they are car tyres as the size on the sides say
FollowupID: 740737

Follow Up By: splits - Monday, Oct 03, 2011 at 11:38

Monday, Oct 03, 2011 at 11:38

The age of the tyre that Roughasguts mentioned is very important. If you have just bought this van, and it is a few years old, then the tyres may be too old to be reliable. Many vans don't do a lot of ks each year so some tyres could be way past their use by date but still have plenty of thread left.

The date of manufacture will be on the sidewall. Look for a slight depression with numbers in it close to the tyre bead. It will usually be about 25 mm long, often with rounded ends, and may have screw head marks at each end. It will look different from all other writing on the tyre. The manufacturer attaches a little tag into the edge of the mould each week and that causes the depressed area and numbers. A reading like 2106 will mean the 21st week of 2006. If you find only three numbers then the tyre dates back to before the year 2000. If the tyre is more than about six years old then buy new ones.

When you want to know anything about pressures, or anything else about a particular tyre, then try ringing the customer information number for the tyre manufacturer. It will be on their web site. I do this whenever I buy a new set of tyres. They will even give you the amount of weight each psi will support and this can vary even between different model tyres of the same size.

Tyre sidewalls usually have a designed flex point. Different pressures and rim widths can change this and have an effect on tyre temperature.
FollowupID: 740755

Follow Up By: ozjohn0 - Monday, Oct 03, 2011 at 17:03

Monday, Oct 03, 2011 at 17:03
175R13 doesn't tell us much.
After that it should have LT or C if not they're car tyres and not recommended for trailers (vans).
FollowupID: 740775

Reply By: Notso - Sunday, Oct 02, 2011 at 16:30

Sunday, Oct 02, 2011 at 16:30
This might help

Tyre pressure calculator chart
AnswerID: 466586

Follow Up By: ozjohn0 - Monday, Oct 03, 2011 at 16:59

Monday, Oct 03, 2011 at 16:59
I'e been using a similar chart for may years. I usually use it as a starting point and then invoke the 4 PSI rule (Bottom of chart) to get the correct tyre pressure for the weight being carried.
Note: the chart is for LT or C radial tyres.
FollowupID: 740772

Follow Up By: STAN C1 - Monday, Oct 03, 2011 at 19:44

Monday, Oct 03, 2011 at 19:44
hi Ozjohn,
thanks for the info
FollowupID: 740805

Reply By: Racey - Monday, Oct 03, 2011 at 09:15

Monday, Oct 03, 2011 at 09:15
The van's rating should state the Tyre pressure.

AnswerID: 466639

Follow Up By: Member - Boo Boo (NSW) - Monday, Oct 03, 2011 at 11:02

Monday, Oct 03, 2011 at 11:02
Mate if the tyres are more than 5 years old get rid of them immediately.

Forget about good tread etc,, the tyres today de-laminate and fail regularly when they are about 5 years old.

FollowupID: 740753

Reply By: GimmeeIsolation - Monday, Oct 03, 2011 at 11:44

Monday, Oct 03, 2011 at 11:44
Hi Stan, the correct way to work out what YOUR tyres require (as it is dependent on load as well) is to start at the recommended pressure for the tyre. If you do not have a pressure gauge, get one and preferably not the slide type, either dial or digital, I prefer dial as it does not need batteries.
When your tyre heats up on the road after a while with your LOADED van, stop and read the pressure again (don't do this test in the rain as it will be cooling the tyre). It should not be more than 4psi above what you initially put in. If it is above your original + 4, put 2-3 psi MORE in - you can get pretty cheap 12v compressors these days that will do the job. This is because your sidewalls are flexing and heating the tyre due to low original pressure and besides causing poor tyre wear and handling, can make your tyre disintegrate.
It may take a few stops to get the correct pressure but it is the right way to work it out as each person has different loads in their vehicles.
Doing these steps will give you an even tyre wear, optimum handling, and the tyre it's best life.
This is the same for your car. All the best on your travels.
AnswerID: 466650

Follow Up By: STAN C1 - Monday, Oct 03, 2011 at 19:43

Monday, Oct 03, 2011 at 19:43
Hi Gimelsol, racey and boo, thanks for the great advice will carry out your
suggestions, have just bought a 12v compressor..tomorrow will check the info on the tyres.... does it make any diffierence if I'm only doing hwy travel as to the tyre type.
FollowupID: 740804

Reply By: snoopyone - Monday, Oct 03, 2011 at 18:12

Monday, Oct 03, 2011 at 18:12
If they are Dunlops of any age change them for ANYTHING else LOL

I had two that were about 5 years old Lots of tread not used much.

Both flew to pieces withing 2 days of each other.

Tyres have the recommended pressures and weight limits stamped into the sidewalls.

If you want a definitive answer always supply as much info as possible

Like tyre sidewall markings size weightlimits etc They have a little oval bit

stamped in them with 4 digits in it like 2302 which means the tyres were made in the 23rd week of 2002.

Anything before 2006 should be dumped

The Max weight of the van Anything less and we are just guessing.
AnswerID: 466691

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