Weird lane keep assist behavior with tires

[Kosh]

so I originally just through the lane keep assist was very weak and flakey with the Kia compared to Honda sensing in my civic.

Recently swapped out the 225/45r18 bridgetknes for 245/45r18 Michelin’s ... all of a sudden lane keep assist seems more powerful than my Honda’s and far more stable and consistent then ever before

Was there something really off with my previous tire balance ? Or can bad tires just do this ?

 

[Bear]

Not sure how tires could make that much of a difference, but what LKA setting are you on? I’m on the highest setting and believe it’s pretty strong. It keeps me in lane, does a great job around bends in the road and when I don’t have the turn signal on and I try to move lanes...it fights me in a game of tug of war.

 

[Kosh]

Not sure how tires could make that much of a difference, but what LKA (Lane Keep Assist) setting are you on? I’m on the highest setting and believe it’s pretty strong. It keeps me in lane, does a great job around bends in the road and when I don’t have the turn signal on and I try to move lanes...it fights me in a game of tug of war.

I have had it on the strongest setting all this time changing the tires is when the wy it worked improved a ton

 

[Waynerm002]

What Michelin's are you using? The Bridgestones are Grand Touring tires, if you went up to UHP AS or some sticky Summer tires, they will perform a lot better than the OEM tires which might be why you noticed the change. I recall a similar situation with my first Optima, the car drove crappy with the OEM tires, they slipped a lot and the ABS and TC activation was excessive. I installed some Pirelli's and it was like I had a brand new car! Better tires can do that.

 

[Kosh]

Uhp as Michelin as3+

Ride, noise, handling all improved I just found it interesting and weird that changing the tires actually made active lane keep hold the lane better and longer was flaky at best on the oem bridgestones

 

[Waynerm002]

Typically the higher performing tires are grippier so they respond faster.

 

[Registered Member]

My LKA is inconsistent and hardly ever works around corners, even mild ones. I had it on the highest setting. Now I just turn it off as I find it annoying to have it only work intermmittently.