Correct, but I hate how the 275/40's look on the front of my SN95. They look like they stick out in the front more than the rear with a 315/35 on a 17X10.5 wheel. I think a 245/45 will fit just fine & look good too.....
not all,the limited edition mustangs came with a special 17x9 rim as part of the package with 245/45/17 tires. btw they looked great,did not look too small at all