Tyre Pressure, Have You Got Enough Air?

[CHIPS]

Trouble is... it's in KPSI or whatever it is.  I'm running 240 front and 230 rear.  What's that in pounds anyone?

I think you mean kPa (kilopascal).

Am I the only one here who doesn't know what pressure's in thier tyres?

[Guest pauly]

EVERYONE REMEMBER!!!!

TYRES are NOT a warranty item !!!

so remember FORD(or any other company) may state a pressure to use in tyres(that gives the best grip and ride)but to to get maximum performance and life out of your tyres, check with the tyre manufacturer as they know best!!!!

Usually the tyre pressures recommended are way below the norm!!!

Just for the better ride of the car!!!!!!

[NT TURBO]

I just had new Yoki's fitted 45psi all round was the tyre mobs suggestion.

[genebaby]

EVERYONE REMEMBER!!!!

TYRES are NOT a warranty item !!!

so remember FORD(or any other company) may state a pressure to use in tyres(that gives the best grip and ride)but to to get maximum performance and life out of your tyres, check with the tyre manufacturer as they know best!!!!

Usually the tyre pressures recommended are way below the norm!!!

Just for the better ride of the car!!!!!!

I looked at Dunlops sites here and the US and couldn't actually find their recommendation for their tyes.

[Worpor]

I now run 50psi in my Dunlop 18's. I drive hard and was feathering the the edges of the fronts badly, but at this presure its stopped and Im getting even wear.

[sharkey]

Make sure you go buy one of those digital guages guys and keep it in the glove box. I did.

Trouble is... it's in KPSI or whatever it is. I'm running 240 front and 230 rear. What's that in pounds anyone?

And if I wanted to go the popular 40psi front and 38 rear on my 18's... what's that on my guage?? Anyone know?

To convert kPa to psi multiply kPa by 0.14504

So 230kPa x 0.14504 = 33.4psi

240kPa x 0.14504 = 34.5psi

Or the other way

38psi / 0.14504 = 262kPa

40psi / 0.14504 = 275.8kPa

[ducatijb]

I was running 42f and 40r when I noticed at 15000k the 18's were wearing out quicker in the middle of the tread Now I am running 38f-36r

[Zeke]

Yes, you can convert using those formulae - or you could just buy a proper digital gauge, eg Michelin.

Costs a bit more initially, but has 2 big advantages:

1. reads the pressure accurately (seems important to me)

2. gives you a choice of the units on the readout each time you use it.

PS the non-digital Michelin gauge I bought 30 years ago is still the smallest, neatest gauge I've ever seen and it is still deadly accurate.

[Guest Scootre]

Make sure you go buy one of those digital guages guys and keep it in the glove box.  I did.

Trouble is... it's in KPSI or whatever it is.  I'm running 240 front and 230 rear.  What's that in pounds anyone?

And if I wanted to go the popular 40psi front and 38 rear on my 18's... what's that on my guage??  Anyone know?

You're telling people to buy a guage that you don't even know how to use yourself. Good advice.

LMAO. Go back to sleep dopey.

[Guest Scootre]

To convert kPa to psi multiply kPa by 0.14504

So 230kPa x 0.14504 = 33.4psi

240kPa x 0.14504 = 34.5psi

Or the other way

38psi / 0.14504 = 262kPa

40psi / 0.14504 = 275.8kPa

I would have looked it up myself but couldn't remember the unit of measure: KPa. Thaaat's it. Thanks for the converted values.

Most of you will probably know that the table of "recommended values" is on the drivers door, but I don't think it goes up to the 38-400psi range. Both KPa and PSI are there.

I've been keeping a good eye on my tread from centre to edge to watch for over / under inflation problems.

Does anyone here go so far as a thread depth guage? I mean... at $500+ a tyre... it's probably a small price to pay. Are the guages worth the trouble?