2017 CTR Suspension feels loose

[Irish-R]

So a while back I switched to the 18" BBS wheels with 275/35/18 Michelin PS4S tires. Recently I hit some road debris and had a blow out. The PS4S tires were on backorder so I ended up getting 2 new BF Goodrich G-Force Sport Comp 2 for the rear axle. Obviously the tread patter is different than the Michelins and they are a bit wider than the Michelins.

At first everything seemed fine and other than the BFGs would rub from time to time on bumps, they handled just fine. Now I have a random problem to which I cannot figure out the cause. It feel like the CTR suspension is not near as firm as it was, even after I first got the new tires. The back end feels REALLY loose and feels like it wants to break loose. The car is very squirly, especially if when I do lane changes.

Has anyone had a similar experience? Is this a tire issue? Suspension issue? I've also noticed that when I change suspension modes that there is not as much as a felt difference in the tightness as before.

Any suggestions would be appreciated.

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[NapalmEnema]

Softer sidewalls on a different tire can make the car feel 'broken' - I did that once with a set for my EVO and my wife asked if I broke the car. I went back to the tire shop and was able to swap to a different tire for a nominal fee since the tires were barely used. Worth it to me - if the car won't handle what I need it to do it's dangerous to me so not worth ' well I'll just run through these and get a better option next set'.

Good luck bud

 

[Byron Sexton]

Never run different tires on a car. If you are going to buy tires buy four same sets....

 

[Mcclaughry95]

The bfgoodrich are rather soft and makes the car feel numb and they squirm a good bit. I ran them on all 4 for 20k miles. I'm just assuming the Michelin are more firm since I have no experience there.

 

[Irish-R]

The bfgoodrich are rather soft and makes the car feel numb and they squirm a good bit. I ran them on all 4 for 20k miles. I'm just assuming the Michelin are more firm since I have no experience there.

I've always had great luck with the BFGs in the past. When I first got them they seemed nice and firm. It just seemed like one day they went from firm to all over the place. That is why I was wondering if something in the suspension had given out.

One detail that I left out is that I now have 96k miles on this car. I drive the crap out of it.

 

[Mcclaughry95]

I've always had great luck with the BFGs in the past. When I first got them they seemed nice and firm. It just seemed like one day they went from firm to all over the place. That is why I was wondering if something in the suspension had given out.

One detail that I left out is that I now have 96k miles on this car. I drive the crap out of it.

Its possible for sure with that milage then I'd be looking at sway bar and end links first. Then all of the other bushings.

 

[TboneR]

How did those BBS's held up for you? I'm still contemplating on getting a set of BBS RF sometimes in near future.

 

[Irish-R]

How did those BBS's held up for you? I'm still contemplating on getting a set of BBS RF sometimes in near future.

I love them. They work great and look sharp.

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