D16GER

Guys, just had set of Eagle F1's fitted to MY03 standard rims.

Any advice on best/ideal pressures to maintain?

Cheers

TonyBurns

iTrader: (3)

WRX or STi?
I believe both have different pressures, you should adhere to what the manufacturer recommends (it will be on the door frame/inside frame) but thats your starting point.

Tony

D16GER

Woops, WRX

babber

I did a fair bit of experimenting on my car, and would suggest you do the same mate.

I got an RB5 and found that 34 front and 30 rear was the best for my set-up. I know yours in a little heavier, so why not try that to start with. I also found that 1 PSi can / does make a difference with regard to understeer, etc

Thanks Phill

GaryCat

I use 33 front, and 32 in the rear. That is the prodrive recommendations if their spring kit is fitted.

DaveW

I've found that with Eagle F1's its best to run them a bit harder to stop the sidewalls flexing too much. Running 36f 34r at the moment, tyres are wearing flat and handling is ok.

Jerry B

'03 WRX 5-dr with Prodrive springs, rear ARB upgrade and F1's in 215/45 XL.

34/32 for me at the moment. I've run them a little higher at times but this seems about right for me this time of year with these tyres.
I agree with comments that 1psi really can feel different! - and I also think it matters at what temperature you set the pressures. Do it early on a cold morning and by lunchtime when it's 10 degrees warmer they bounce around a fair bit, so I set them (obviously when the car's been standing a few hours) a little later in the day. Door pillar on mine says 33.5/32. Start there and tweak to suit I reckon, with a decent gauge of course. Too soft and they feel vague and a bit wandery, too hard and they're bouncy at the back and twitchy. I usually have a few kilos of luggage in the back.
I check mine weekly as they tend to lose a bit.