I have the 235-18's on my Mustang, soon to change out to a 315/35/20.
This represents a 5% change.
i was under the impression that I could change this value using the SCT 4 tuner.
First off....congrats on having a very fast streeter.
2econd.....I can't understand how people are getting away with running these times with no safety gear in place.
I spent THOUSANDS on safety equipment to run times not much faster than yours.
Not my current 15 GT, but when I did just the skinnies and lightweight wheels on my then new 85 GT it knocked 1.5 tenths off my E.T.
Doing lightweight rears was also worth nearly a full tenth.
Add it up and I knocked about 2.5 tenths just from the wheels and tires.
First 1/4 mile track day.
#2421
15 Gt Premium. A6/3.15 gear. 235-50-18 tire.
Bone stock, no mods other than to lower the tire to 25 psi.
Zip for traction as the air temp was right at 50*. No track prep either.
I tried it with the TC off the first pass and it just blew the tires off so the...