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Old 02-22-2017, 09:17 PM   #1
swv9
 
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Pressure tires 205/50 r15

Hi friends

I need to know how much pressure I could use in my tires ContiPremium Contact 2 05/50 R15... (before I have 175/65 R14, changed by R15)

I have a New Yaris Sedan 2013 GLI

Thanks, regards from Chile

Sorry for my english
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Old 02-23-2017, 08:20 PM   #2
SirDigby
 
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it does not matter the size. pressure is pressure.
the question is, what is your altitude?
sea level pressure is 30psi
3000 ft. (1000m) is about 32psi
5000 ft. (1500m) is about 33-34psi
7000 ft. (2100m) is about 34-35psi
10000 ft. (3050m) is about 36psi
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Old 02-23-2017, 08:26 PM   #3
IllusionX
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30psi? It really depends on the tire. I run Yokohama s.drive tires and they really need 35-38psi to wear evenly. And I'm almost at sea level.

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Old 02-23-2017, 08:51 PM   #4
swv9
 
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Quote:
Originally Posted by SirDigby View Post
it does not matter the size. pressure is pressure.
the question is, what is your altitude?
sea level pressure is 30psi
3000 ft. (1000m) is about 32psi
5000 ft. (1500m) is about 33-34psi
7000 ft. (2100m) is about 34-35psi
10000 ft. (3050m) is about 36psi
I am in Los Andes city, Chile... 819m aprox
https://en.wikipedia.org/wiki/Los_Andes,_Chile
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Old 02-23-2017, 08:51 PM   #5
Rigaud
 
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Quote:
Originally Posted by SirDigby View Post
it does not matter the size. pressure is pressure.
the question is, what is your altitude?
sea level pressure is 30psi
3000 ft. (1000m) is about 32psi
5000 ft. (1500m) is about 33-34psi
7000 ft. (2100m) is about 34-35psi
10000 ft. (3050m) is about 36psi
Oh boy.......YES tire size makes a difference. The bigger the less psi is required to a certain extent.

I run 205/45R16 with 30-31psi front and 26psi rear. I usually make a chalk marl on the sides and drive the car on and off highway then look at the wear mark off the chalk. I then adjust accordingly + or -.
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Old 02-23-2017, 08:52 PM   #6
swv9
 
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Quote:
Originally Posted by IllusionX View Post
30psi? It really depends on the tire. I run Yokohama s.drive tires and they really need 35-38psi to wear evenly. And I'm almost at sea level.

Sent from my SM-G930W8 using Tapatalk
so?

I think the pressure depends more on the vehicle than on the tire or not?++

Because if a tire of a measurement, I use it in different cars, the weight changes therefore another pressure
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Old 02-23-2017, 11:00 PM   #7
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http://blog.toyota.co.uk/toyota-tyre...and-size-guide

http://www.puretyre.co.uk/toyota-tyre-pressures/
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Old 03-01-2017, 08:43 PM   #8
SirDigby
 
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I was just starting with the door sticker setting and adjusting for loss of pressure due to altitude, but temperature and humidity can also make slight changes. here's a chart:

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