09 RT REar End "squirm" at highway speeds

[NoNeck]

I have an 09 RT that I've had about a month now. It has just over 4000 miles and I believe it has all factory suspension in it. When I bought it over 200 miles away I had a chance to drive it at speed on the highway. At the time it was rainy and windy and I noticed the rear end felt very squirmy for lack of a better term. I attributed it to the rain and wind and have since only driven it around town. Today I had the car on the open highway and again noticed the rear end moving around. I noticed it at 80 mph, but once I did, when paying attention I could feel it even as low as 60-65 mph. I have 2 months warranty left and if its an issue, despite my disdain for dealerships, I'd like to get it fixed. Is this normal? I have not seen other posts here about it so I am thinking it is not normal. I was driving the car lets just say in triple digits the night I brought it home and it seemed worse then at higher speeds.

[cannonballcobb]

My 2009 R/T felt "floaty" to me from the very 1st day.

That all changed after I lowered the car by changing the springs and shocks to Bilsteins.

Now the car feels VERY sure footed.

[waumo]

What tires are on the car?

And do you have your tire pressure set properly?

[NoNeck]

Tires are the original Goodyears. Good idea on tire pressure. They "look" fine but could be low. I take it this is not a common problem from the lack of responses. I'll check pressure and post back later or tomorrow. Thanks for the suggestion and suspension feedback so far!

[waumo]

Originally Posted by NoNeck

Tires are the original Goodyears. Good idea on tire pressure. They "look" fine but could be low. I take it this is not a common problem from the lack of responses. I'll check pressure and post back later or tomorrow. Thanks for the suggestion and suspension feedback so far!

I'm guessing the RSA all-seasons? Not the F1s?

I don't have the RSA all-seasons but in general I always found all-seasons to be a little "squirmy" compared to summer tires.

Hopefully some owners with same tires and model will chime in.

[sorbs]

Upgrade your suspension like cannonball recommends. The stock settings will always make you feel like you're floating.

[sitedrifter]

It's not the tires it is the car itself. My 2011 SRT8 is a bit "floaty" at high speeds as compared to my SRT10 which was on rails up to 160. I can imagine an RT being a little more "floaty" so do as others said, revise your suspension as there are some great kits on the market.

[mdlfcrsis]

Agree
My SRT tightened up more with different springs and sways

[Cuda]

My R/T isn't floaty at 3000 miles!!! Thank you STP.

[SKULLMAN]

10,000 miles, Goodyear RS/A's 100+mph, no problem.