Tyre pressure - 2015 Mini Cooper Forum
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post #1 of 22 Old 11-28-2014, 10:04 AM Thread Starter
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Tyre pressure

I have a Mini Cooper S with 17" wheels:

I got a tyre pressure warning after i hit a pot hole, everything seemed ok so pulled into a garage to blow tyre up.
I looked at the tyre pressure figure on the tyre and blew that tyre up to that setting. I then checked the other tyre which didnt have the pressure warning and blew that up to the same figure. (Cant remember what the PSI on the tyre was now)
Anyway i was thinking that i may have blown my tyres up to much, should i of used the PSI setting stated on the tyre or should it be something lower.
Could someone check what there tyre pressure is on there mini
Cheers
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post #2 of 22 Old 11-28-2014, 10:08 AM
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Quote:
Originally Posted by crobson1969 View Post
I have a Mini Cooper S with 17" wheels:

I got a tyre pressure warning after i hit a pot hole, everything seemed ok so pulled into a garage to blow tyre up.
I looked at the tyre pressure figure on the tyre and blew that tyre up to that setting. I then checked the other tyre which didnt have the pressure warning and blew that up to the same figure. (Cant remember what the PSI on the tyre was now)
Anyway i was thinking that i may have blown my tyres up to much, should i of used the PSI setting stated on the tyre or should it be something lower.
Could someone check what there tyre pressure is on there mini
Cheers
In the US, at least, the tire pressures are listed on the driver's side door jamb. Look for a sticker.
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post #3 of 22 Old 11-28-2014, 10:21 AM
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The warning is caused by the high pressure condition created by the compression of the tire from the impact with the pothole. I had that with a previous non Mini where our post-winter pothole speckled Canadian roads would cause it all the time.
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post #4 of 22 Old 11-28-2014, 11:53 AM
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The PSI on a tyre sidewall is the maximum that it can be inflated to and almost no vehicle will ever use that pressure - it's probably one and half times what Mini suggest as the optimum, so it's no surprise if the 'good' tyre wasn't inflated to that pressure.

It sounds like you've now got two heavily over-inflated tyres. That should be no problem in the short term but you want to get them back to the recommended pressure when you can to avoid excess wear on the centre of the tread - plus they should be giving a really jarring ride at current pressure.
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post #5 of 22 Old 11-28-2014, 12:01 PM
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Angib is right and the pressure is on a sticker on the drivers door. Mine is in kpa but easy to convert and most gauges have it on. Check those tyres fast!

Surprisingly delighted to have moved to an f54((with a r59 in the fold for fun!)
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post #6 of 22 Old 11-28-2014, 02:58 PM Thread Starter
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Thanks for your replys.

Just been outside and checked my car: dont know current pressure until i check tomorrow.

On the front Tyres it says max 340 KpA 50 Psi
On Label 2.7 bar 270 KpA. (2 passengers)

So what should i set my tyres too tomorrow, i live in the UK and use PSI so a bit confused to what to set my tyres too.
As i said before they are currently 50 Psi so i need to deflate them a bit very soon.

Cheers
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post #7 of 22 Old 11-28-2014, 03:02 PM Thread Starter
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Hi me again,

Would i be right to deflate my tyres to 39.1 PSi
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post #8 of 22 Old 11-28-2014, 03:29 PM
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I remember reading 44 psi is a common setting these days and some felt that was too hard a ride.
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post #9 of 22 Old 11-28-2014, 04:42 PM
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Hi me again,

Would i be right to deflate my tyres to 39.1 PSi
Yep, that's 2.7bar.

Being an old fart I sill have a Dymo machine somewhere so added a label to the door pillar telling me what the pressures were in PSI, though I think most gauges have markings in bar too.
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post #10 of 22 Old 11-29-2014, 12:44 AM
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Yes you need to set them to 270 map 39 .1 psi

Surprisingly delighted to have moved to an f54((with a r59 in the fold for fun!)
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