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dtrum

toyota prado 150 tire pressure for srilankan road conditions?

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friends i want to know what is the recommend tire pressure for toyota prado 150 for sl road conditions, i previously used 32psi that recommend by toyota,

my tire size is 265/65r17

thanx

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30, don’t go too less as it causes early wear for the steering rack. 

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Is it not mentioned in the driver side door well? 

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50 minutes ago, tiv said:

30, don’t go too less as it causes early wear for the steering rack. 

are you using 30 psi?or any experience?

thnx for quick reply

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42 minutes ago, JayZ said:

Is it not mentioned in the driver side door well? 

yeah its 32 psi actually its 31.9.

i want to know according to our road conditions 

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Well....what is wrong with 32psi ? Is the vehicle too bouncy or something ?

The tyre pressure is also dependent on the conditions you use the vehicle under. 32psi will work even in SL conditions because lets be honest...major roads actually are pretty decent. The other roads..well....it should not be too much of an issue at 32...but if it is too bouncy then take it down by about 2 psi or so.

Reducing the pressure drastically by what is recommended will effect the performance (fuel efficiency and handling) and longevity of the suspension. For me staying with a a 2-3 psi reduction if needed has worked and I stick by it.  To be honest, I have not had to reduce my tyre pressure lower than what is recommended.

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40 minutes ago, iRage said:

Well....what is wrong with 32psi ? Is the vehicle too bouncy or something ?

yeah little bit bouncy , thats why i think to reduce air pressure,

also all the previous vehicle that i used are pump less than recommend pressure , those recommendations for japanese road conditions, but in sl lots of road are still not in good conditions 

thanx for valuable reply

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1 hour ago, dtrum said:

are you using 30 psi?or any experience?

thnx for quick reply

Yup I do not own a Prado but I do own vehicles in the same category and weight, and the very same tyre size,  30 is kinda the sweet spot for me, the door sill stickers kinda range at 32 to 36 psi as per load variations,  

also consider the tyre brand, if the car has done above 60k surely the tyres are replaced, check the ply, higher plies make it a hard ride even at lower psi

Edited by tiv
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3 minutes ago, tiv said:

Yup I do not own a Prado but I do own vehicles in the same category and weight, 30 is kinda the sweet spot, the window sill stickers kinda range at 32 to 36 psi as per load variations,  

also consider the tyre brand, if the car has done above 60k surely the tyres are replaced, check the ply, higher plies make it a hard ride even at lower psi

thank u

i am using michelin tires

Edited by dtrum

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10 hours ago, tiv said:

Yup I do not own a Prado but I do own vehicles in the same category and weight, and the very same tyre size,  30 is kinda the sweet spot for me, the door sill stickers kinda range at 32 to 36 psi as per load variations,  

also consider the tyre brand, if the car has done above 60k surely the tyres are replaced, check the ply, higher plies make it a hard ride even at lower psi

Is this true?  Some people fix lower ply tyres than the original ones on SUVs and Vans in SL believing it’ll increase comfort. I’m not sure how true this theory is.

i believe Prado will have 8 ply tyres

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in australian owner manual show 29psi

 

japan domestic manual show 32 psi for same vehicle

57377CAA-2E84-45AB-AD4B-82FCFC520229.jpeg

Edited by dtrum

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On 10/12/2019 at 5:03 AM, Magnum said:

Is this true?  Some people fix lower ply tyres than the original ones on SUVs and Vans in SL believing it’ll increase comfort. I’m not sure how true this theory is.

i believe Prado will have 8 ply tyres

Naturally as the amount of plies reduce the flex in the tyre, thereby the ironing affect on road distortions, but low ply tyres are week, so you gotta find the best compromise 

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35 minutes ago, tiv said:

Naturally as the amount of plies reduce the flex in the tyre, thereby the ironing affect on road distortions, but low ply tyres are week, so you gotta find the best compromise 

I get what you’re saying, a stronger tyre will be harder, but if I’m not wrong modern tyres don’t have plies, in Sri Lankan people match the weight rating of tyres to old ply rating. 

Only way to find out is to try two different tyre sets on same vehicle one after the other and compare the comfort 

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On 10/13/2019 at 3:35 PM, Clark'sson said:

Your one must be a company model.

My UK model LC4 150 irons out the bumps even at 34-35psi

no my one is japan domestic txl model 

in door sticker its show 32 psi 

probably its for japanese road conditions, i just trying 30 psi ,it’s very comfortable .

also global manual show 28psi 30psi

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On 10/11/2019 at 5:33 PM, Magnum said:

Is this true?  Some people fix lower ply tyres than the original ones on SUVs and Vans in SL believing it’ll increase comfort. I’m not sure how true this theory is.

i believe Prado will have 8 ply tyres

Machan, I don’t know if different countries get different ply ratings. I see the much heavier Land cruiser 200 comes with 4ply rated P285 60 R17. I see 4ply rated 265/65/r17 with load index ranging  110-112 on the Prado. Not sure what exact load index dtrum has in his Prado.

 

However mine came with 4ply rated tire P265/70/r17 and recommended 32psi. But when I change it to 10 ply rated (load E) a/t tires LT275/70/r17 the tire shop recommended to run at 38psi on highway. They said though you can drive really low psi in off-road never to run at less psi at highway speeds as the rubber inside the tire might get damaged and you never know until it gave up at high speeds. So even though now I feel every bump on the road I still run at 38psi on regular roads. 
 

In short I would say it would be better to run at 32psi if he has regular tires. Not an expert on this but sharing what the tire shop told me.

Edited by kmeeg

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11 hours ago, kmeeg said:

Machan, I don’t know if different countries get different ply ratings. I see the much heavier Land cruiser 200 comes with 4ply rated P285 60 R17. I see 4ply rated 265/65/r17 with load index ranging  110-112 on the Prado. Not sure what exact load index dtrum has in his Prado.

 

However mine came with 4ply rated tire P265/70/r17 and recommended 32psi. But when I change it to 10 ply rated (load E) a/t tires LT275/70/r17 the tire shop recommended to run at 38psi on highway. They said though you can drive really low psi in off-road never to run at less psi at highway speeds as the rubber inside the tire might get damaged and you never know until it gave up at high speeds. So even though now I feel every bump on the road I still run at 38psi on regular roads. 
 

In short I would say it would be better to run at 32psi if he has regular tires. Not an expert on this but sharing what the tire shop told me.

It's the same rating everywhere, in the past tyres were using layers of plies, higher the ply, stronger the tyre. However, modern tyres are made using other materials hence now we use a 'load rating index.' Load rating is mentioned in numbers, you will find it after the tyre size. For easy reference tyre shops in SL match the load rating to the old ply rating, for example 98 load rated tyre would be similar to a 6 ply tyre, the tyres on my Hiace are load rated at 104/106, the tyre shop told me it's a 8 ply tyre. 

The 265/65/R17 tyre you came across probably has 4 layers of ply in addition to other materials because 110-112 load rating is equivalent to a 9 or 10 ply rating

sidewall-NEW-01.jpg

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37 minutes ago, Magnum said:

For easy reference tyre shops in SL match the load rating to the old ply rating, for example 98 load rated tyre would be similar to a 6 ply tyre, the tyres on my Hiace are load rated at 104/106, the tyre shop told me it's a 8 ply tyre. 

The 265/65/R17 tyre you came across probably has 4 layers of ply in addition to other materials because 110-112 load rating is equivalent to a 9 or 10 ply rating

No clue how those load index works. Mine shows 121 and it’s rated 10ply. Need to search more and see..

74D2F703-E646-4191-BF17-15DC811BFFFF.jpeg

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