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Discussion Starter · #1 ·
According to the sticker on the door frame the tire pressure should be 2.3 bar.

Today I wanted to inflate the tires for the first time. Dailed in 2.3 bar and it started deflating from 2.8 bar down to 2.3...

Now the tires seem quite soft... What pressure do you use?

I have 18 inch weels, but according to the manual all tires need to be inflated to 2.3 bar.
 

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mjvdzwet said:
According to the sticker on the door frame the tire pressure should be 2.3 bar.

Today I wanted to inflate the tires for the first time. Dailed in 2.3 bar and it started deflating from 2.8 bar down to 2.3...

Now the tires seem quite soft... What pressure do you use?

I have 18 inch weels, but according to the manual all tires need to be inflated to 2.3 bar.
Sometimes tyres are over inflated at sale and they naturally go down to about 2.3 after a few hundred miles of driving.
 

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2.8 bar is too much. I always use about 2.4 bar for the 18" on my other Toyota (235-55-R18) .
On that pressure the profile is wearing evenly also. At 2.8 bar the profile in middle will wear faster as on the sides.
 

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I used to vary from 34 to 38psi but often prefer higher for a bit of stability on 50 to 60 profile tyres.

40psi does seem a bit much but I think its within the tyres capability. Dont hypermilers do mid 40s?
 

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If you have the official tyres stick to the figures in the user manual 2.3 bar.
 

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A-Dawg said:
Sometimes tyres are over inflated at sale and they naturally go down to about 2.3 after a few hundred miles of driving.
That's absolute nonsense, no correctly fitted and sealed tyre would drop 7 psi over a few hundred miles. Try again with some links to back up your claim :D :lol: :roll:
 

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Just checked mine this morning for the first time, they were all at 2.6 bar, put them all to 2.3.
So judging by the previous comments they are set high at the factory, and it would seem not checked by the majority of dealers prior to sale
 

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Discussion Starter · #9 ·
Today I went back to the gas station and inflated them to 2.4 bar early in the morning. It feels better then 2.3, but maybe the high temperature gave a wrong tire pressure with the 2.3 bar yesterday.
 

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Just checked mine and they were on 38psi. Have reduced them to 33psi and put car in garage. Will see if it does make it noisier when It next take it out
 

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This morning, outside temp 20 degrees, my tirepressure was 2.3 bar. Exactly what Toyota prescribes.
The C-HR drives very well with this pressure and is not noisy.
Maybe it also depends of the brand of the tires. (I have Yokohama's)
 

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Kostas_F said:
Well. I found mine at 40 psi. Then I changed it to 33 psi (read it on the manual) and sound from the tires got worst.
I kept 33 psi but thinking to put some more air.
Maybe they had a faulty gauge and the real pressure was lower than the one you saw. Never trust the pressure gauges in gas stations. Buy one for you and check the pressure once in a month. They are pretty inexpensive. Also the tyres must be cold when you measure the pressure. For example let the car rest for the night and the next day before driving it take a measuring.
 

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mjvdzwet said:
Here in Holland Michellin are fitted as default brand.
On the original wheels, Dunlop tires were mounted.
I have exchanged this for Yokohama, 215/60/17, winter tires, and on the Toyota multispoke wheels I also have, 225/50/18 Yokohama's (Blue Earth A50) These tires are very quiet.

I think the C-HR drives with a fairly low tire pressure. My previous car, a Yaris, drove with a tire pressure of 2.7 bar (205/45/17), while the car was a lot lighter.
 

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Discussion Starter · #16 ·
I asked my dealer today. They recommend 2.5 bar.
Because the tires are fairly wide and driving with a little too high pressure is "better" for the tires than a bit too low.
 

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I use 2,3 bar (cold tires, 18" Michelin Primacy 3), and car goes fine! I have always thru the years used the pressures by the manufacturer and have never been any problems with them!

Uti
 

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I also checked tire pressure after a month i got the car :oops: and saw it was at 2.8bar :evil:
I deflated them down to 2.3bar and the car feels much better now specially on our sh$#ty roads in my city.

So factory inflates them too much.
 

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Maybe 2.8 is too much but 2.3 i think is too low for my Dunlops. Take a look at the profile of the tire when at 2.3. It touches too much on the ground.
2.3 is Toyota's suggestion. I think tire pressure depends more to the tire itself and car weight.
I have now 2,5 - 2.6 and feels good.
 

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Kostas_F said:
Maybe 2.8 is too much but 2.3 i think is too low for my Dunlops. Take a look at the profile of the tire when at 2.3. It touches too much on the ground.
2.3 is Toyota's suggestion. I think tire pressure depends more to the tire itself and car weight.
I have now 2,5 - 2.6 and feels good.
Don't know. I will wash tires, put some tire dressing and i will take it for a ride.
Then i will check if profile touches the ground.
 
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