What size tire on stock wheels and suspension

[TwiSTFiesta]

I feel I've scoured the forum and can't seem to find an answer.

I'm looking to buy some Yoko Advan Fleva V701's and am struggling to decide what size I should go with. The FiST is on stock suspension and wheels and I'm torn between stock 205/40R17 or 215/40R17.

Any suggestions??

Thanks,
Dustin

 

[Capri to ST]

I have those same tires in the stock 205/40R17 size on stock 17x7 size aftermarket wheels and I have been very happy with the size and with the tires. They have good quick turn in and agile handling, which is my goal for tires. The 215s are also a pound heavier, and it's always good to save as much unsprung weight as possible.
The Ford engineers who designed the car put a lot of thought into every aspect of it including the tires, so I found no reason to deviate from the stock size tires.
Here is a video with one of the engineers who worked on the car discussing the suspension, in the video he says-
The tire is very well matched to the geometry and the torque of the engine.

View: https://www.youtube.com/watch?v=M7YKS9CnpJg

 

[TwiSTFiesta]

I’ll drink to that. Thanks for sharing. Cheers!