chsu74

Didn't I have an escape clause in there? "recommended tire sizes"

Barn996

Correct. 36psi-F, 36psi-R p.196, p.5( 41psi for 225/45R 17 M+S Rear)

porsche-t

That's not the "correct" lower lip for a MKI Aero. there is a piece added to it.

chsu74

uh... Does the bottom lip spoiler looks the same in all three pictures or its just me?

porsche-t

They look the same, but there is a part added on the bottom. Look at the lines on the side of the spoiler.

6ocyclehum

The "aero" front spoiler is added on my car, the lower piece over the original bumper. You can see it where it's circled in Porsche-T's post. Are my clearance mesurements the same as other with Aero front bumpers? This piece may have not been installed 100% correctly, and could be causing trouble.

Also- as I said, the extra "front lower lip" is already integrated to this piece on my car, I cannot add one.

I'll have 18"s on it soon, but the 17" should not cause trouble. Maybe the all season Goodyear F1, but they seem pretty good for all season and are new.

Suspension seems fine, car handles well, doesn't pull. Anything in particular to check besides taking it in for an alignment?

chsu74

Gotcha. Does it match on both sides? I think this is the first I have seen a lower spoiler aero mod like that. Interesting.

Gaspasser19

I had the exact same experience. The dealer had put on new all-season Pilot Sports and I have to admit I didn't notice. The ride was like a rowboat on the high seas compared to the 18s. I mounted Dunlop snows on the 17s. Even they handle better than the all-seasons.

nycebo

I'm voting for alignment. The lower lip (splitter) is actually a black rubber component and it looks like someone may have painted it to match the front bumper...which is fine. One of the issues with these cars at high speeds is that Porsche is mandated by US law to raise the front bumper to meet US regulations. I've always contended that it changes the dynamics of the engineering to make the car feel a little squirrely whenever it's not in PERFECT alignment. Most drivers who have switched to RoW suspensions have noted vast improvements in handlings...not to mention all the drivers who went with 3rd party adjustable suspensions.