[stuntdoogie]

I would not suggest adding larger diameter wheels on the ST. I have noticed the Fiesta is highly sensitive to weight changes with wheels. Any extra rotational mass needs to be accelerated and stopped. I also think it will be hard to use 18" wheels on the street with the ST. I run 17" wheels with 215/40 17 tires and that is on the edge of what will work for a diameter. Things get a little close on full bump with that diameter.

Im thinking of buying new 215 40 17 or 215 35 17 tires for the stock rims cause I live in NYC. How does it feel after your installation? Does it feel sloppy when accelerating?

These are calculations from 1010tires

Stock
205/40R17 Imperial Metric
Section Width: 8.07 in 205.00 mm
Rim Diameter: 17 in 431.8 mm
Rim Width Range: 7 - 8 in
Overall Diameter: 23.46 in 595.80 mm
Sidewall Height: 3.23 in 82.00 mm
Radius: 11.73 in 297.90 mm
Circumference: 73.69 in 1,871.76 mm
Revs per Mile: 886.74/mi
Actual Speed: 62.14 mph 100.00 kph
Speed Variance: -
Diameter Variance: -

Tire Size 1
215/40R17 Imperial Metric
Section Width: 8.46 in 215.00 mm
Rim Diameter: 17 in 431.8 mm
Rim Width Range: 7 - 8.5 in
Overall Diameter: 23.77 in 603.80 mm
Sidewall Height: 3.39 in 86.00 mm
Radius: 11.89 in 301.90 mm
Circumference: 74.68 in 1,896.89 mm
Revs per Mile: 874.99/mi
Actual Speed: 62.97 mph 101.34 kph
Speed Variance: 1.32% too fast.
Diameter Variance: 1.34%

Tire Size 2
215/35R17 Imperial Metric
Section Width: 8.46 in 215.00 mm
Rim Diameter: 17 in 431.8 mm
Rim Width Range: 7 - 8.5 in
Overall Diameter: 22.93 in 582.30 mm
Sidewall Height: 2.96 in 75.25 mm
Radius: 11.46 in 291.15 mm
Circumference: 72.02 in 1,829.35 mm
Revs per Mile: 907.30/mi
Actual Speed: 60.73 mph 97.73 kph
Speed Variance: 2.32% too slow.
Diameter Variance: -2.27%

 

[stuntdoogie]

It is the 3D carbon spoiler. Side by side with the stock one this is way more aggressive.

Thought you had wing risers? Took them off?

 

[stuntdoogie]

Man just to think I used to hate that green color, now I love it. My Tux Black is so bland to me now lol

 

[stuntdoogie]

Love what you have done to your FiST but dont know about that wing. Now you may need widen up the car to balance out the look. This car is too narrow for a rally style wing like that. Just my opinion.