Tyre Inflation Pressure

[Lethalvirtue]

Hi Guys,

I have recently purchased a 1.8 Petrol Automatic , 2011 Avensis.

I do apologize if this information is easily available and I have managed to miss it.

The front wheels on my car are 215/55ZR17 98W and rear wheels are 215/55R17 94W

I have gone through the PDF user Manual for the recommended tyre pressure and there are 3 discrete tables for 215/55R17 94W with Types A , B and C respectively. And I dont know which Type is relevant for me.

The recommended pressures are quite different for these 3 types and I wanted to seek your guidance on how to identify the relevant inflation pressure.

Many thanks for your time in advance.

Best Regards

Sam

[Heidfirst]

what does it say on the label in the driver's door jamb (on the B pillar)?

Your car has obviously had at least it's front tyres replaced as it doesn't need Z speed or 98 W load factor tyres (heck, even the 2.2 Tourer on 18"s needs only 95W).

[Lethalvirtue]

Many Thanks for your response Scott. So I couldnt locate anything on the Drivers Door Jamb.

Upon reading the PDF Tables once more I do see that the Normal Pressure is same for all 3 types (A,B and C) and this is 240 for front and 230 for rear for tire size 215/55R17 94W. Its the Eco pressure that differs significantly depending on whether the type is B or C.

So I reckon I should at least maintain the Normal Pressure until such point I can identify the 'Type' - any other suggestions on how I can indetify the Type apart from the Door Jamb, and finally the question whether the Speed rating Z and load index of 98 requires a different pressure or could I simply follow the recommendations for 215/55R17 94W

[Heidfirst]

very odd that there isn't a sticker on the B pillar.

The speed rating shouldn't affect tyre pressure nor should the load rating (the tyre walls will be a bit stiffer so ride will be a bit harsher).

[Exvec]

Sam you wrote"Upon reading the PDF Tables once more I do see that the Normal Pressure is same for all 3 types (A,B and C) and this is 240 for front and 230 for rear for tire size 215/55R17 94W. Its the Eco pressure that differs significantly depending on whether the type is B or C."

I'm thinking that the above quotes for the pressures are not PSI as that would be awfully huge pressures for your tyres unless your driving a tractor that is, when i was in the trade the general consensus was that if there was a doubt about what psi to use then we used to play safe and stick double the amount of the wheel diameter + 2psi,so in your case it would be 36psi all round ..hope this helps you.

Ps this was irrespective of the tyre speed rating.

[Lethalvirtue]

Thanks again Scott!! Much appreciated.

Many Thanks for your response Michael. Yeah you are right 240 and 230 are in KiloPascals I think, PSI works out as 35 and 34 respectively which is pretty spot on in relation to the rule of thumb you mentioned above (2xDiameter +2)

Thanks again for your time!!