tire wear pattern

my rear tires seem to wear out much more on the inside edge on both sides.

is this a sign of suspession problem?

knl25

How many miles on your Windstar? How long have you owned it? Have you had an alingment done? Does the van pull either left or right when you're driving?

Regards

Dan

The van has 150kmi, but I had it for only 40kmi and have not had an alignment done.

I just had the front struts and rear shocks replaced because it rides rough going over bumps. The replacement seemed to help a little bit.

I may replace the ball joints soon since it squeaks when I turn the wheel either left or right.

I heard bad ball joints can affect tread wire but not sure it that applies to the rear ones.

Also, it seems to pull slightly to the right.

I would get it in for a alignment.
A good alignment will tell you if you have worn or bent suspension items.
It is money well spent.