This is a total street car? 15's with the mph are slow and the 60' shows the biggest issue. It's not the end of the world. It's not like your off by a huge margin. The cars weight is also working against you, otherwise, Stroked is correct, as far as getting the time down.
But are you ready to move away from the 3.23's? Not being able to get off the line quickly or into and finish up with the last (4th) gear is not letting the engine/car package to use its full ability. If not, just start with the wider tires. You need not have slicks for the track only. You can double duty with a good tire. Once you have as wide as a tire you can get with your current set up, play with air pressures of the tires
A suregeip equipped rear would also help a lot since your spinning that one tire.
Order of items;
Sure grip
Wide tires