Ive got an 03 Cobra with 580 rwhp. I have 19x10 IForged wheels with 305s out back. Went i rip on it full throttle it feels like the read end is moving all over the place almost like a side to side wheel hop. I had my car to Pauls high performance, he replaced a bent rear tie rod that was in the shape of a banana with some aircraft grade tierod, and it did nothing. He said he thinks the wheels are flexing. I contacted the wheel company and he said its impossible, if the wheel flexed it would break. All IRS bushing look and feel solid. Im wondering if it has anything to do with the contact patch due to the large tires and 19x10 inch rims. If i slap the stock rims on with 285s, it drive perfect. This is major issue, its on the verge of losing control when it starts. Any ideas, ever heard of this before?