[crobson1969]

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

 

[uke]

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.

 

[Stingray82]

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.

 

[Angib]

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.

 

[jeremybingham]

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!

 

[crobson1969]

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

 

[crobson1969]

Hi me again,

Would i be right to deflate my tyres to 39.1 PSi

 

[PTet]

I remember reading 44 psi is a common setting these days and some felt that was too hard a ride.

 

[Angib]

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.

 

[jeremybingham]

Yes you need to set them to 270 map 39 .1 psi

 

[crobson1969]

All done, front tyres set to 2.7 bar

Cheers everyone !

 

[jeremybingham]

Well done I think the ride might be a bit comfier. Tyre pressures are very important. I had an an mr2 mk 2 which some will know was initially heavily criticized for its tail happy handling so Toyota fitted bigger rear tyres.Mine was the changeover and when I bought it dealer had unknown to me pumped them to the older settings. 26 psi all round rather than 32 front 36 reaer. The first sharp corner I hit and I span. Mind I did dab the brakes in panic. Fatal in a mid engined car. Never did it or even felt like it would with correct pressures.

 

[MAC99]

Well done I think the ride might be a bit comfier. Tyre pressures are very important. I had an an mr2 mk 2 which some will know was initially heavily criticized for its tail happy handling so Toyota fitted bigger rear tyres.Mine was the changeover and when I bought it dealer had unknown to me pumped them to the older settings. 26 psi all round rather than 32 front 36 reaer. The first sharp corner I hit and I span. Mind I did dab the brakes in panic. Fatal in a mid engined car. Never did it or even felt like it would with correct pressures.

VERY important.
Those who might not think tyre pressures are important, try riding a motorbike.
A few psi over or under can result in dramatic handling problems and likely to result in an accident.
With cars it's not as noticeable under slow driving conditions, but still very important for road grip, handling, general vehicle stability and tyre wear.
I remember telling a woman that one of her tyres was very low and she thanked me.
I noticed 3 weeks later the same thing, and she responded "oh I know but I am waiting for my husband to sort it out" (she was still driving the car like it all that time).
Sheesh!

 

[jeremybingham]

VERY important.
Those who might not think tyre pressures are important, try riding a motorbike.
A few psi over or under can result in dramatic handling problems and likely to result in an accident.
With cars it's not as noticeable under slow driving conditions, but still very important for road grip, handling, general vehicle stability and tyre wear.
I remember telling a woman that one of her tyres was very low and she thanked me.
I noticed 3 weeks later the same thing, and she responded "oh I know but I am waiting for my husband to sort it out" (she was still driving the car like it all that time).
Sheesh!

100 % right. Check mine and the motorbikes every week can't believe some people!

 

[Tony83]

What is the tyre pressure for 18 wheels? Is it the same of 17 wheels?
Thanks a lot!

 

[02fanatic]

I didn't see anyone mention this but the tire pressures spec'd on the door jam sticker are always based on "cold" tire temperature. So, check your pressure before driving in the morning, etc. Use a digital gauge if you have one.

I just realized this is an old post, but this still applies.

On the new post, the difference between wheel sizes may not make much if any difference re tire pressure. You need to see what the sticker says....pressures vary between manufacturers and tire styles.

 

[Tony83]

I found. For europe the tyre pressure for 18 wheels is 2.5 front and 2.3 rear with min. load, and 2.8 front and 2.6 rear for max. load

 

[Deonair]

I found. For europe the tyre pressure for 18 wheels is 2.5 front and 2.3 rear with min. load, and 2.8 front and 2.6 rear for max. load

The sticker on my car says 2.7 bar front and 2.5 bar rear with 2 people. I have 18's???

 

[Tony83]

The sticker on my car says 2.7 bar front and 2.5 bar rear with 2 people. I have 18's???

Yes, you are right!

I have a question: do you reset the rdc system everytime you restore the correct pressure or is the reset necessary only in case of a new standard value or when you mount the winter tyres?
Thanks a lot!

 

[jeremybingham]

Personally think the reset only needed when you change the tpms valves but happy to be corrected.