Hi guys, I had my car drop for a while now on megan ez coilover. Before I bought my new set of wheels, I drove the car with the OEM wheels and they never had any cupping issues. Then after I bought my AME Shallen with 20mm hub centric H&R spacers on Nankang NS, and then they started cupping on the front inside tires after 5000 miles. I had the alignment done and only had the toe adjusted.(don't have camber kit) At first i thought it was the spacers causing the issue, but then I bought Orden's with new Nankang NS and had the toe adjusted to spec's again. Camber is at -3 BTW. Recently i started hearing the same road noise so I inspected the tires and found it was cupping in the front again! I also checked the front end of any damage or worn out bushing and couldn't find any signs of damage. I always keep my tires at 40psi, torque them down evenly, and I'm using hub centric rings. My questions is do you think is the Nankang tires or do I have a suspension problem?

Thanks in advance guys!

 

Maybe your coil overs are blown, or maybe you have a bent rim or the rims not balanced properly.

If you have a 2wd mount the front wheels to the rear and do a burn out that should help round them back up. Or just replace them.

40psi is imo too much air psi

 

rims aren't bent and it was balance correctly. I guess it could be the coilover but I didn't see any sign of leaks on the strut. Front tires spec are 225/35/19 and rear are 245/35/19. Any other possibilities?