rob76turbo

All,

Went and did a casual track day at MSR in Cresson, TX and very quickly noticed something developing on my Boxster S.

Running Toyo R-888's and I felt a vibration and heard a thumping coming from the
right front tire. This only happened during right corners, when the right tire
in normally unloaded. During left hand corners, there was no noise. I looked at
the tire itself and saw that the outside edge was down to slick and the inside
edge still has some of the grooves left. This got progressively worse as I ran
sessions, and to note, there was some tread at that outside edge at the
beginning of the day. I am wondering if the uneven tire wear was contributing
to the vibration / noise. Another PCA / Boxster guy happened to be there
and as I described the issue to him, he thought wheel bearing, but I am not
sure... Any thoughts?

amondc

Sounds like a wheel bearing to me. Jack up the rear and see if you can move the wheel

RollingArt

Did you carefully inspect the inside sidewall on both front tires?

Could be a bubble forming there.


Phil

rob76turbo

I was able to duplicate the sound today with my street tires and based on the corner/speed / sound, I think the verdict is.....bearing..... I ordered a front set today and will install this weekend. I hear freezing them helps with the install!

amondc

Going to boardwalk and having Mr Gladwill press them out and in really helps on the install...:-)