mr58

My 2014 C2 just started noticeably wandering (mainly to the right but also at times to the left) - I find myself making newrly constant corrections to keep it straight. Does this typically mean that the car needs an alignment or could it be a suspension issue, etc.?

The car has 20" P-Zeros with ~5k miles on them. The tires are set at 31 front and 34 rear (cold).

Thanks

LexVan

I'd say alignment. Likely.

Unless you've recently hit something big enough and severe enough to damage a suspension part. Unlikely.

Those tire pressures seem low.

mr58

Thanks - what do you recommend for pressures?

LexVan

Depends. Full load? Partial load?Others here run your low pressures too.

I run 36/40. PZeros. 20".

Go up 2 psi on all 4 corners and see if it improves.

It's hard to maintain tire pressures this time of the year. You head out in the morning from your 60 degree garage when it's really 40 degrees outside. Then it warms up to 75 degrees by lunchtime.

Maybe your tires are even lower than you think.

And maybe it's gotten worse as the weather has cooled.

Use a good tire gauge. Not TPMS. Then cross reference.

hansw

I've run 31/34 in my 991 CS2 on highways for some 18,000 miles. Runs and feels perfectly fine. Tires wear well. That is without any luggage.

drcollie

Most the time this is caused by tires. Secondary cause alignment/toe. However, unless you hit a pothole its unlikely your alignment is compromised.

DerekS

I've found this car to be very sensitive to mismatches in tire pressure.

LexVan

On a flat surface, under firm braking, does the car track straight?

MKW

you mention it is " new " , but it cant be nail in tire as that would trigger TPMS well before tire pressure is low enough to cause wandering

as aware as you seem to be to " things " , per your other posts , I suspect you would have felt and remembered a pothole or curb strike signif enough to affect alignment that would more likely cause a new pull to one side only / steering wheel off ctr immediately afterwards

was the car prev tracked ...i.e., could it be a loose susp component or failing wheel hub component ?

could prev owner being a track junkie have spec'd " toe out " for better at limit handling but which would cause strange road tracking , esp left or right " wandering " on real roads with uneven pavement , more pronounced if your daytime outside temps have dropped a lot in the past few weeks ?

if it were my car, I would take it to local specialty susp/ alignment shop with much Porsche experience and have them 1) inspect the susp hard parts, 2) check alignment and 3) spin all four tires/wheels on their Hunter Road Force balancer to check for wheel or tire out of round / mismatch

I would not trust a random dealer service monkey with this as I have heard from some dealership service advisors that they like to assign this " low IQ " work to some of their techs who are not very good at " diagnostics " , as cars become more and more mostly rolling computer labs

Dan Darst

Verify that the wheels are tight to the hub. A paved road that has rutted due to, say, hot weather truck traffic will make the tires climb up the side of a rut on either side.