MarkV

Hi
just acquired 1998 wrx STI import and tyre pressures on door pillar are shown in this order 2.3 Bar 1.9 Bar. Everything in Japanese of course. To me, all my previous non performance cars have rear tyres as the higher pressure. The previous owner has stuck a note above the Jap figures converting to Psi but has Front as the higher pressure? I am now confused - does the AWD mean fronts higher? or has the previous owner got it wrong? The tyres are standard for the car as no mods whatsover.

Help please

Mark

richiewong

Yep, higher pressure in the fronts.
Loads of conflicting ideas on pressures, some run 32 to 35psi in the fronts and between 28 to 33 in the rears

MarkV

Thanks M8

RRH

keep the rears approx 3psi lower than the front, try 31/28 ans increase incrementally until you're happy with it.

velohead66

And what about track days ??
Increase both by a few psi, or keep as is ??

Fuzz

We normally set scoobs that come in for alignment at 34 front, 32 rear.


Andy

RRH

Increasing them slightly will slow down tyre wear to the shoulders of the tyre.

Try 6psi more than normal and play around with it, you can feel a major difference on track just by adjusting the tyres a couple of psi.

If its wet I usually drop the pressure a couple of psi.

Bear in mind that they will heat up quite a lot faster with higher temps, so keep your eye on it, and try to maintain the pressure you have chosen.

C 8HEP

dry track- 40 f 37 r max.

unless you buy low profile decent tyres and rely on the grip you wont find any handling difference between 31-35 psi.if your suspension is very soft its unlikely you will be using ur tyres to there best potential anyway

Graham Pryme

Hi,

I've found after 3 years Sprinting that 37 front. and 35 rear works for me in the dry. 33 front 31 rear in the wet. This is only over short distances and not to be confused with Track Day requirements though.
I have standard suspension with Eibach Sport Springs.

Cheers,

Graham

STI5300

iTrader: (4)

I sprint my RA and run 36psi front and 33psi rear. As RRH states keep the rear 3psi less, if I go any higher than these on Avon ZZ3 tyres it all gets a bit too exciting for me. Try 34 and 31, it depends on what you are doing etc.

Andrew

RRH

Bob's just mapped my 2.5 STi and its rather exciting (scary) whatever the tyre pressure