Floating at 120mph plus

[Bgrames]

I recently went to 20 inch wheels from the stock 18.8 I have 255’s on front and 305’s on the back the car seems to float at 120 mph any help with this would be appreciated

Sponsored

 

[ice445]

Non performance pack GT? Lol it's just the dampers, they're soft for comfort. At high speeds they struggle to dampen the mass of the car fast enough for confidence. You also have a pretty extreme stagger going on there. I suspect that much unequal grip is going to amplify the problem significantly.

Another solution is to not drive double the speed limit.

 

[Bgrames]

Thanks

 

[FruityJudy]

Along with the soft dampeners you also have raised your cars height which is allowing more air under the car. You may want to look at lowering springs and a nice functioning splitter.

Or you could never drive past the speed limit and live in a little bubble wrapped shell with no enjoyment or dopamine release.

 

[Bgrames]

Thanks also I didn’t think about the fact that I had about 100 miles on the tires was wondering if that could contribute to this also

 

[Bgrames]

Didn’t think about the height of the car that’s a great point I just looked at it lol thanks again

 

[I Bleed Ford Blue]

Tire pressure will play into this also. I just recently had mine in for an oil change and they added air to my front tires and over inflated them. They put 40 lbs in them and they felt floaty at 60+ mph. I dropped the pressure back down to 32 and all is fine now.

 

[HeelToeHero]

What's the final OD of the tire? I suspect you raised the ride height with the wheel change and more air is getting under the car.

 

[Gregs24]

Tramlining on wider tyres could also contribute

 

[Bikeman315]

I have 255’s on front and 305’s on the back the car

You also have a pretty extreme stagger going on there. I suspect that much unequal grip is going to amplify the problem significantly.

Question.......why so thin on the fronts?

Also , any suspension mods? If not it's time to start thinking of them.

Sponsored