2000 NB is wandering at speed

Whats up guys, have a 2000 NB that I recently got some new tires for. (Kumho Ecsta AST in 205/50/15). When I have driving over 40 mph and or on the freeway the car doesn't drive straight...it wanders to the left and right. Also when I give the car some throttle it pulls to the left and when I let off the gas it pulls to the right.

I recently had an alignment and havent hit any potholes/major bumps so I think that is still good. I checked the PSI on all tires and all 3 are 35 psi but the driver's side rear is at 9.5 psi. Is this the culprit? I realize I may have a nail in the tire but my question is this what is causing the car to not drive straight?

That would do it.

I have the exact same tires and mine drives strait.

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Originally Posted by kung fu jesus

That would do it.

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Quote:

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Originally Posted by JLBMX5

I have the exact same tires and mine drives strait.

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1. Thanks for the confirmation I figured that had to be it. Doh! I thought at first I was experiencing tread squirm but my tires are well over 600 miles so that couldn't be it.

2. Just wondering, how do you like em? I feel like the sidewalls are on the soft side.

So far I love them. I've only had them a few months and I haven't had a problem yet

just to add some more info, after an autox I got a nail in the rear one tire was at 35 the other got down to 15 and it was obvious, annnoying. Since I check them every 3 weeks or so.. I picked it up before any serious damage. Even changed the diff oil. Little specs in clean fluid. I suspect they came from the aluminum threads on the diff.