Hi,

I asked about this on the end of a previous post, and someone said it miht say in the glove box. I

It doesnt say anything there, or under the fuel cap, or on the doors? Any suggestions

I went to pump up the tyres and and teh front 2 were at about 35psi and the back 2 were about 50psi? Does this sound anywhere close to where they should be!

Thanks

Hi
I assume you have no handbook?
If so and you want me to look in mine then i will do so but I have a Van. Dunno if they will be same but a call to toyotas dealer will tell you for sure!

Al. (IMG:style_emoticons/default/banana.gif)

no I have no handbook, any info on tyre pressure would be geat :)

i have a 93 hiace camper hi top its a yokahama conversion there`s a plate on drivers side wheel arch that says 3.5 kg/cm for front 4.5 kg/cm rear hope this helps

Hi, thanks, how does that convrt to PSI?

don`t know try looking at a presure gauge,mite be on that

I think it's more a case of the pressure the tires are rated for. That should be on the sidewall. A conservative choice would be to fill them to 90% of the max PSI.

These are heavy vans - the tires mine came with looked underinflated even at 37 psi, which I am sure did nothing for their rolling resistance. I have since put on higher load, higher pressure tires (51 psi), which roll way better even though they are snow tires! they are called Yokahama Ice Guards, and they rock.

As for relative pressure front to back I don't know, I keep them all at the same pressure, maybe I shouldn't.
-Pard

Hey, thanks for your replies, just inside the door on mine it says 3.5kg/cm2 and 4.5, I didnt know that was teh tyre pressure, but If you say so!

The only thing is none of the pumps at petrol stations have that here, only bar and psi.

i found a conversion on the web, and it worked out at 50psi for teh front, and 65psi for teh back!! DOesnt that seem a bit high? And also why less at the front, surel the weight is mainly at the front because of the engine?

If anyone could answer any of this would be great,a s Im off on a road trip soon, and just want to know what the trye shoudl be at! :)

Thanks

Well, I sure as hell would not pump a tire up to 60 psi unless the sidewall advertised that it was good at that pressure. I guess it's safe to say you can pump your tires up to their rated max. Look on the sidewalls.

Pard

Really, I was about to go and pump them up to that much! The side of teh tryes dont say anything to do with pressure...grrr, they are goodyear! thats all i know :)

I wonder how Im ever going to know !

My 1986 HiAce manual says:

Low speed, petrol: 255 kPa (37 psi) front, 441 kPa (63.9 psi) rear
High speed, petrol: 275 kPa (39.8 psi) front, 441 kPa (63.9 psi) rear

Low speed, diesel: 275 kPa (39.8 psi) front, 441 kPa (63.9 psi) rear
High speed, diesel: 294 kPa (42.6 psi) front, 441 kPa (63.9 psi) rear

(I'm pretty sure the 'high speed' diesel numbers are just a bit of an inside Toyota joke. :D)

The 'C' in 185R14C-8PR stands for Camionette, French for 'Light Truck.' 185R14C are rated for 65psi/450kPa/4.48bar. These are not car tyres and take much higher pressure.

To increase fuel economy, I run mine at 64psi. I've recently bought a new set of Michelin XCDs and am monitoring the tread depth for excess wear in the middle of the tread but so far is normal, even at 64psi front & rear. The hard front tyres make low speed manoevring and parallel parking in particular much easier. Downside is the steering is a bit light on the motorway at 110km/h and requires more frequent correction, but it's a minor annoyance for about 6% better fuel economy over the recommended 37 psi in the fronts.

Early in the piece owning this van, never having owned a light truck before, I made the mistake of running the tyres at 34psi. I believe this was implicated in the left rear tyre belts delaminating and losing the entire tread in one hunk at 90km/h, causing damage to the left rear fenderwell sheetmetal. The van was unladen except for me. I was incredibly lucky that the casing remained intact and I was able to drive to a stop on the steel belts. Underpressure could very well have caused the tread and belts to overheat and delaminate.

Hi, thaks for your reply, very informative :)

I think I will pump the tires up to 50 for the front and 65 for the back like it says in the door.... they do look a bit spongey at the moment!

thanks