Tyre Pressure

[dephilile]

Hi

Just a quick question. What sort of pressure should I have in my 18” tyres on my VT? Are the specifications on the inside of the door frame still ok to go by or should it be more in order to keep even pressure on the road since there is less tyre wall?

I’m going camping this weekend and my car is going to be loaded up.

cheers

[1991_Vn2nV]

What size tyres are they and what is the max pressure stated on the tyre?

[dephilile]

The rims are 18”, on the tyre its got 235/40ZR18

The max pressure is 300Kpa/44psi when cold

cheers

[GTP 85]

The rims are 18”, on the tyre its got 235/40ZR18

The max pressure is 300Kpa/44psi when cold

cheers

Ive got same rating tyres. Have been running 40psi ever since ive run 18s on all my cars. Im prepared to sacrifice a bit of ride quality to insure my rims dont get damaged.

[dephilile]

Yeah, I’m paranoid about damaging my rims as well.

Do you find you get even tyre wear with that pressure?

thanks

[minux]

i ran 40 psi in 18's for a while, the wear was fine.

[coolvxss]

i run about 46psi in my 17s on long trips. On the side wall it says 44psi when cold. My 17s are wearing evenly.

[flyen]

i put 38 in my 18's and havent had a proplem

[Thomas1]

i put 38 in my 18's and havent had a proplem

Same here...

[1991_Vn2nV]

3-4 psi below the max stated pressure is a good rough rule of thumb. So I would put 40psi in your tyres.

[Conceive This]

I Work for beaurepaires
and i have done plenty of Tyre technology coarses and this is what ive found.

NOTE: First off remember the tyre placcard on the vehicle is factory fitted
this is the comfort level prescribed by the vehicle manufacturer and is not tyre rated

15'' and 16'' pasanger tyres = 30-32psi

17'' Proformance tyres= 32-35psi

18'', 19'' and 20'' Proformance tyres= 34-36psi

work utes and vans pressure set to 40psi

Now of coarse this is only a guide if you feel its a bit sloppy
you are able to increase these measurements

NOTE: NEVER EXCEED MAX TYRE PRESSURE (located on the side of the tyre)
this is usualy but 50psi

Remember more pressure gives you greater steering response tho can stress the tyres integrity, also there is less give if you hit a pot hole this could cause tyre sepperation (sidewall bubbles) or damage your rims..


NOTE: if you are travaling log distances ie. interstate all measurements should be increased by 4psi this also aplies to fully laden vehicles.

With 4WD

all tyre pressures should be set to 40psi depending on your comfort


Now all these measurments should give you maximum life and proformance
from your tyres...

SAFE MOTORING...

[TWOJZ]

I Work for beaurepaires
and i have done plenty of Tyre technology coarses and this is what ive found.

and yet you can't even spell performance

[1991_Vn2nV]

and yet you can't even spell performance

Or courses. Or several other words

I find every tyre place I go to run tyre pressure that is far too low. They put34 in my 19's!

It might be good for ride comfort, but poor for handling.

[MaN|aC]

Nearly all the tyre pressures are way too low...

I also work for Beaurepairs, I can guarantee I know alot more of tyres then you do
As a floor manager I train my staff to set tyre pressures at

13" and 14" 34psi
15" and 17" 36psi
18" 38psi
19" and 20" 40psi

Even if you are a marketing ploy trying to make people aware of their tyre pressures please give the people the correct information and use a spell checker

[Conceive This]

Yeah well you might work at beaurepaires but you obviously
Haven’t done the tyre tech courses.... if you had you would know
That I’m correct...
And that 40 psi in low profile tyres is way above
TYRE MANUFACTURES SPECIFICATIONS
And this can cause serious structural fatigue
Causing separation and or impact fractures

You Can also check out Dunlop/ Goodyears tech on there
There websites and find all this info too

Not that this has anything to do with this though
Just for some random knowledge V8 supercars run 20psi all round
And 15psi if using nitrogen
F1 cars and Indy run 15psi in there tyres

I’ve worked for beaurepaires for 6yrs from
*DUNLOP MOTORSPORTS TYRE TECH (racing)
*FITTER/SALES at CROWS NEST, SYDNEY (retail)
*MANAGER CHATSWOOD, SYDNEY (retail)
*ASSISTANT MANNAGER GOSFORD (commercial)

So yeah I’m sure you know more tho

SAFE MOTORING

[TWOJZ]

been working on "proformance" cars for the past 6 years, right? lol

40psi is not above the maximum pressure specified by the manufacturer.

[MaN|aC]

Yes I have done the Talking Tyres and Technology course, ive been working with Beaurepairs for four years now. Running 40psi in 19" and over isn't above the manufactures specs.

Im also a qualified Certificate 3 Underbody Specialist and I have a Certificate in Advanced Wheel Alignment course.

[Kruza]

i have also worked for beaurepaires and also bridgestone, yokohama, dunlop, goodyear and so on and so on..............
NOW--- the correct tyre pressure for an 18" tyre is acctually 40psi...
you can run any pressure you want to so long as it does not go above the tyre manufacturers recommendations ok there CONCIEVE THIS so dont try your bull%@#$ with us ok
dephilile,,, just have a look on the sidewall and see what they recommend to run in themotherwise just run 40psi as thats what i run in my 17" 18" and also my 16" alloys

[Kruza]

and by the way racing tyres does not include what Dephilile whas trying to ask ok so just read what is writen and stop your crap k
p.s.... learn to spell as it is annoying trying to read and cannot understand what you said when spelt wrong!!!!!!!

[Kruza]

and i have been fitting tyres for 9 years that includes truck AND car tyres

[Conceive This]

and by the way racing tyres does not include what Dephilile whas trying to ask ok so just read what is writen and stop your crap k
p.s.... learn to spell as it is annoying trying to read and cannot understand what you said when spelt wrong!!!!!!!

Ok for starters this is a Forum for info not arguments, second my spelling in the last was fine (not whas like u spelt)...

Second commercial store is trucks aswell....


I am qualified front end Specialist so this also includes W/A Ticket
if you Want to Call me at Beaurepaires
i am happy to talk this through

And if You guys Work at beau's Email. STEVE TOBIN
you should know who he is right?

maybe try do refresher course?



MaN|aC's I'm not trying to argue but tyres are constructed
differently to yrs ago within the last 4yrs tyre technology has changed dramaticaly, tho if You do have some proven test info im happy to listen

nothing i have written has been crap either NV_90VN

[TWOJZ]

Ok for starters this is a Forum for info not arguments

its for information, not misinformation...
should I go check the max tyre pressure on my 18inch tyres? and take a pic for you? 235's or 275's?

[Conceive This]

Ok another thing for NV_90VN

I do remember writing the racing info as just a fact I did state that
It had nothing to do with what he asked ok... maybe you should try spell check
Yourself mate

And fitting tyres is a pretty easy job (no smart technical know how needed)
Is one of the lowest paying jobs hourly rate not total time as I know road service you can clock up some hours and earn a good wage...

So if you have been fitting tyres for 9yrs well doesn’t say much is all I can say
I’m not fazed by what you have written you obviously dropped out of school early on in life and are not capable
Enough of finding a better job

[Conceive This]

its for information, not misinformation...
should I go check the max tyre pressure on my 18inch tyres? and take a pic for you? 235's or 275's?

Ok well you should learn the meaning of words it says MAX PRESSURE not reccomended....


send an email to goodyear or dunlop australia

[Conceive This]

The Tyre Pressure's I Stated Are Recomended Not What You Need To Run........... You Can Run Whatever You Like

The Pressures I Gave Are Stated To Get The Maximum Wear And Proformance Out Of Your Tyres, As Instructed By The Tyre Manufactures