(Home) Tyre pressure

does any one know the tyre pressure for a toyota space cruiser or know how to convert aussie kpa to uk
thanks guys
sue

- (#9129) susan, 9 Mar 04 14:05

Going on memory 33 psi all round. Do you have the sticker on the driver door frame? Several tyre size's and pressure's to choose from.

- (#9129) Clive (Bristol), 9 Mar 04 15:22

It depends on what tyres you are running and should be on the side of the tyre.
Mine say 36 psi max, and that's where I run them.

- (#9129) DaveW, 12 Mar 04 05:02

mine are 175/80r14 and 33psi

- (#9129) jon, 12 Mar 04 11:55

DON'T take the advice given aove, with reference to the pressure being written on the side wall of a tyre, this just shows the maximum load at a specific pressure and is not applicable to a vehicle, after all how does the tyre manufacturer know which vehicle the tyre will be fitted to!!!!! The pressures should be run at those specified by the vehicle manufacturer for the fitted size. In the case of the Townie this is around 33psi for the 195/70 R14 fitted as standard. However you will find many on this forum that find around 40-42 Psi to be much safer & more comfortable & seemd to aid tyre wear.

Regards Rob.

- (#9129) Rob Drinkwater, 12 Mar 04 14:49

rob, with all respect, in australia if you run pressures higher than those marked on the sidewall of the tyre you will void your insurance in case of a claim (if it can be proven, of course). you will also void any warranty on the tyres.
in australia, you must fit tyres that comply with the tyre info placard on the vehicle, and so those tyres must meet the minimum requirements of the manufacturer.

in that case the correct pressures to run are those that are on the sidewall of the tyre, as they will be within the vehicle manufacturers stated specification.

if the uk rules allow you to put any tyre on then you are right, but i would question the wisdom of putting on tyres that do not meet the manufacturers spec, and then even moreso running them at higher pressures than specified by the tyre manufacturer.

construction also makes a difference - a lt construction can generally be run at higher pressures - typically anything up to about 50 or 60psi, but passenger construction tyres are rarely rated above about 42psi, and more often at about 36psi.

"how does the tyre manufacturer know which vehicle a tyre will be fitted to?" they assume it will be fitted to an appropriate vehicle.
the pressure marked on the side of the tyre is a maximum pressure, not a suggested pressure - it is potentially dangerous to overinflate a tyre.

- (#9129) DaveW, 15 Mar 04 15:28

Dave, what Rob is saying is that you've got to recognise that the maximum pressure on the sidewall is just that, a maximum. Just because your particular tyres say 36max doesn't mean that's the correct pressure for THAT application. Conversely, as you say (and this IS an issue with cheaper tyres in the UK)the tyre must be chosen to handle the vehicle's actual loading. Many budget tyres in the UK in that size only have a load index of 75-85, where the townie needs in excess of 92 IIRC.
In my opinion, the recommended pressures for the townie are TOO low, certainly for the way we expect them to be used in the UK. Handling always seems best at around 5-8psi above recommended, where the fitted tyres will allow it...

- (#9129) david miller, 16 Mar 04 00:33

David, things are obviously different over there - there is no requirement for the tyre placard to indicate pressures over here, and so the only pressure indication that there is would be in the handbook - which of course most of us don't have anyway - or on the tyres.
It is actually illegal to fit underrated tyres over here, and most tyre fitters will not do it.
As a result my tyres do exceed the vehicle manufacturers minimum specifications in both speed and load rating, and I run them at the the maximum pressure indicated on the tyre sidewall (because I have found the higher pressures are better).

Maybe it's just the way that I read it, but it seemed to me that Rob was suggesting that the pressures should be run at 40-42 regardless of the tyre info - I was trying to point out that that may not be safe, and it certainly isn't legal in Aus.

Summary - most people find that the Ace's drive generally better at higher tyre pressures, but if the tyre info says 36psi, then that is your safe upper limit for that tyre - regardless of application. If you want to run higher pressures you should get higher rated tyres.
- (#9129) DaveW, 16 Mar 04 14:06