Choppy ride Corolla 06

Dan wrote in news:a267ced6-0c9f-4434-abc7-e99acb09b858 @s19g2000vbr.googlegroups.com:

You're evidently not sure of the pressures, which is not a good start.

Two questions:

Pressure is 31 PSI (checked with gauge), in owner manual it states pressure of 32PSI.

Usually its the other way around. Parts are stiff when cold. At 35k miles I can't think of anything that would be worn out. Shocks are good for 50-60k miles. Bushings tend to last 120k. I have to rent Corollas every now and then. They are not made to be comfortable for long trips. They are made for excellent milage. Maybe the seat is worn out?

Paul wrote in news:i7l1cp$obd$ snipped-for-privacy@news.eternal-september.org:

Gas pressure increases with temperature. Obviously what the OP was talking about. How could the seat change *while* driving?

I agree. Gas pressure increases with temp but I doubt if his driving conditions are making much of a difference. Its been my experience that suspension is much tighter when cool.

I took his comments to also mean that over time his ride has gotten bumpier, not just after he has driven a few min.

Any thoughts on what could be causing it if that is what is happening after a few min?

Paul wrote in news:i7m0v9$c7h$ snipped-for-privacy@news.eternal-september.org:

A stuck brake caliper heating up the shock by convection? who knows. I'd certainly check for anything hot in the wheel wells.