New Tires Worse Handling Slip light Coming on
 

Recently I go a hole in one of my tires. They were the stock tires but of a newer car. I noticed all the tires were cracking even though they have tread left. I went to my tire shop and bought some Michelin pilot all season 4s. Same size as stock. Car is all stock 2013 with about 70k miles.

I noticed after driving on them the car seems to sit higher and the handling feels less tight, almost floaty. Under hard cornering like when entering a freeway on ramp I notice a clunk that sounds like the tire hitting the fender. This is only from the drivers side. I have checked for signs of rubbing and even put blue painters tape under both fenders and did hard turns both ways. Heard the noise but no signs of the tape being disturbed. I also notice that after an aggressive lane change or even of I have to avoid something in the road on the freeway the slip light will come on for a moment.

Hoping some one has an idea whats going on.

There is a break in period for tires. They always feel kind of squishy to start with. Besides that i would definitely check all the lugnuts.

Check your tire pressures. Many tire shops leave the tire pressure at the beat seat pressure, which is much higher than what you should be driving them on.

Agree they will feel a bit squishy and grip will be lower until you wear off all the mould release from the tread. I've had some tire feel downright dangerous in wet conditions, but after 100~200 miles they were great.

Been there. Talking to a fellow gen 2 BRZ owner this weekend and he had the problem similar to what you describe from the dealership after delivery. They had the pressure set to just under 50psi and the car handled horribly. Once he found the problem and fixed it, everything was much better.

I'm betting on tire pressure too.
It happens to me quite often. I get new tires, drive home with the car handling terribly only to find the tire pressure to be 60 psi or so. These idiot tire installers fill the tire to set the bead and send you on your way without setting the right pressure. It would be nice if the tire pressure light would come on for too much pressure as well as not enough.

Brand new all-season tires at full tread depth are going to be a LOT more squirmy than well-worn summer tires they replaced (assuming your car came on Primacies). That's likely at least some of it. Check pressures of course as mentioned above.

what size tires did they put on the car?

after hitting the bump violent enough to knock out a tire, have you had the alignment checked?

Yeah It was om primacys. I checked the pressures they were all above 45psi. I lowered them all to 35 but haven't had a chance to drive it yet.

No a screw killed the tire I replaced them be cause they looked old and were cracking.

i'd still recommend getting the alignment checked. it does get knocked off with the wear of parts and age of the vehicle