Age Old Question

[corsa]

Of tyre pressures and surfed this and scoobynet and cant decide, i have an o7 UK STI Hawkeye with toyo proxes 225/45/17s on them

I am currently running 30psi all round, now i have slight wear on the inner and outer edges not much but enough to make me think about the pressures, will try and get a couple of pics up later.

What do you guys think i should run the PSI at? both front and rear please?

D

PS not into track use or anything just weekend driving.

[drb5]

Does it not say in the manual Davie?

I'd have said 35 myself.

[fai17]

front 32

rear 34

[Maxxed_Ross]

I tend to run the front at about 32-34 to help with even wear, but the back at 30. I found having the back harder than the front made it a bit "twitchy" in the damp

[corsa]

Some pics of said wear, i know the outer edges are over eager cornering but its the inside that gets me.Fronts are the issue, rears are ok.

[billyboy]

Are the tyres toyo's Dave?If they are mine went like that too.

[dipsy]

235/45/17 Toyo proxes 34 front and 30 rear

[kennyuk300]

225/40/zr 18 pirelli pzero rosso 33 front 32 rear as stated on the sticker on drivers side dooor jamb

[thefastone]

Does it not tell you the right pressures to use inside the drivers door post?

[gus the bus]

Davie,

It could be geometry settings thats doing that as much as tyre pressure.

Have you had the Geo checked recently?

Gus

[ANDYJDMSTI]

  fai 17 said:

front 32

rear 34

Why would you run softer at the front considering your weight is over the front of the car?

The inside wear is an inherant problem with Subaru, i had it on all 3 of my cars (classic, bugeye and blobeye).

I would get the geometry fiddled with and see if you can dial some of the wear out.

[corsa]

Cars only done 10,750 mls and drives straight as a die and handles fine, dont really want to start feckin about with the settings.

Tried upping the pressures to 34 at the front and 30 to the rear today then took a run for lunch at the Loch Fyne Oyster Bar mmmmmmmmmmmmmmmmmmmmmmm, will check back in a few weeks and monitor to see if there is any difference.

Cheers guys, oh and yes Billy they are Toyos.

Davie.

[ali37]

33 Front

31 Rear

As advised by Prodrive with their Springs Kit

(MY05 STI)

Never had a problem.

[colzo]

05 STIs onwards tend to wear on the outside due to the standard geometry settings. I run 34 front and 32 rear on 18s. Do you have a lot of roundabouts where you live/work?

[corsa]

East Kilbride is very local to me does that close the thread then ????

[G.Mac]

ola when I was down at Powerstation they set my tyres at 36 front, 34 rear or was it 35 rear

Always used to run them 33 / 34 front and 32 / 33 rear

Graeme

[chunkymonkey]

looks to me like they are too soft, and i'd recommend not fiddling with the geo until you have tried the pressures first.

i got 30000 miles out of a front set of Dunlop Sports on my A8 and when they came off the outside edge was like yours only slightly worse, but the inside edge was down to the canvas

you would have sworn that the only way they could have got like that would have been for the only part of the tyre in contact with the road to be the inside edge. quite amazing.

got told to add 4-5psi to the next set and check the wear after 2-3000 miles and see if it had made a difference, and it has. much more even wear now, so i'll keep checking mine.

no point telling you what mine are set at, as they are 255/40 ZR 19s, but the wear issue is almost identical to yours.

Don