Anyone? I bumped up my fronts to 34 psi, from 28 that the dealer set at last service.. and its v firm. (50 profile standard GridII rubber). I actually can hear some bump/thump from the wheel with harder pressures...

Anyone notice? similar ? VR-X series II owners?

Ta.

I'm running 36psi Nitrogen all round on my 17" rims 235/45/17 which would be pretty similar to the stock vrx. Very smooth ride with the nitrogen although 36psi with air felt quite hard. Mate across the road uses 36psi front and 34psi back using air in his 17" if I recall correctly.

The thing to remember is every pump and pressure tester reads differently so your best of finding one you like to use and sticking to it and vary your pressures to what gives you a comfy ride without compromising wear/performance

[quote:b11612d694]I'm running 36psi Nitrogen all round on my 17" rims 235/45/17[/quote:b11612d694]

yer, i should check my tyre pressure too one day. :( if i ever get my car back :cry:

Im actually running 52 PSI on my Firenza's 235/45/R17. This is 10 PSI above the factory reccomendation however i've researched this any all the experts say this is safe to over inflate past the manufacturers reccomended inflation level. You will generally find that the manufactuers reccomended psi level is actually lower to keep maintain ride comfort.

Check with your local tyre shop to see if its ok to do this with your tyres.

Im actually running 52 PSI on my Firenza's 235/45/R17. ...
Check with your local tyre shop to see if its ok to do this with your tyres.

:oops: 52??? whoah!.. I read somewhere you will significantly shorten the life of your shocks/struts with pressures like that. :)

yes it will shorten the life of shocks because of the extra thump they get, cuase the tyre has turn into rock

another reason why it should not be that high is if you hit the gutter or go over a large rock (or someting) the chance of blowing the tyre increases alot

just my two words

I have 36 in mine but they're the 15' steel wheel. When they drop to 34 I pump them up again. 52 is rather high, can't say I'd do this. The advantage of higher pressure is that it offsets the speed at which you'll aquaplane in the wet. Guages read differently but hopefully not much. Dad checked his car once and this was funny cause he used to say, make sure the pressures are right. Turned out it was over quoting the pressure by 8psi. He bought a new one and it's good. Also discovered my brother was rolling around on 25psi. Worked wonders for his fuel economy when he pumped them up.

I use 42-44psi in my 17" 235/45/17
Haydn

Man...I must be bad...I only run mine at 32 PSI all round!

For stockies i wouldn't run any more than 38psi.

Since pumping mine up to 52 i haven't noticed any decrease in ride quality but cetrainly traction /pickup is better. The car also feels much more stable on the freeways

i vary mine depending on the applications...
general town road use ~ 32psi,
hunting :badgrin: ~ 36-38psi,
going home (bad roads, dirt) ~ 28-30 psi

they may not seem like big changes, but they are quite noticable!

38-40 all round on my 205 15"s

I run around 30 psi in all mine - the less air you have in your tires the bigger the contact patch is on the road, therefore you have more traction. That's why top fuel dragsters have only 10 psi in their rear tyres (although I wouldn't recommend 10 psi for street use :lol: ). So, If you want more traction, lower the psi in your front tyres, it is also a softer ride.

Mick

maxmagna.. true, but too soft and you begin to wear the tire.. and reduce its life dramatically in the sidewall dept. Plus, you use more fuel. :D

For memory i run about 36psi in my tyres - the 225's / 60 H 15's

This is great and I have had no problems with excessive tyre wear - well - unless of course the car is floored and not moving - if you get me!!

Manual

How can you have the car floored and not moving....
Something must be moving...
Oh.... :!: I get it .. you didnt have the car turned on...
Silly me.
Haydn

Manual maybe make sure that you put the key in or disable your kill switch... then you should be able to have your car floored and move.

Haha - funny mate!!

BUt if you noticed if you read - i get excessive tyre wear when the car isn't moving - dont mean that parts of the car arent!!!

Manual

So you are sitting in a pool of acid?
Haydn

For memory i run about 36psi in my tyres - the 225's / 60 H 15's

This is great and I have had no problems with excessive tyre wear - well - unless of course the car is floored and not moving - if you get me!!

Manual

Key phrase here T: 'excessive tyre wear' & 'car is floored and not moving' - what action in a car is the combination of these 2? ;)

So you are sitting in a pool of acid?
Haydn
i sure hope your being sarcastic... otherwise you get the ](*,) award!

34-36 front
32-34 rear

i got 235/35zr19 falken p-zeros (theyre called something along the lines of that)

if you underinflate the tyre the outside wears out quicker than the middle and if you overinflate then your middle wears out more than the edges. ive read in some articles that 36 for the front and 34 for the rear is the best performance/lifespan combo

LoL @ TButcher, hehehehe :D ,

c'mon fallas can't you see he is toying with Manual.