The meter runs all the time in all modes and registers the highest reading until reset. I reset it and took the Mustang on what I call a test drive with a firm peddle both gas and brake and a few quick but normal turns. With that, it goes as well as it stops and turns right and left with the same force. When I first turned it on, the meter reading was a 1.8G brake. I guess that is what got to the drivers side fender and all down the side on the donor car. Not sure what the readings would be at a track.
I should add Road and Track says these numbers are typical of a street driven muscle car. They give .55g Accel as 0-60 at about 4.5 seconds. Then 1G would be 0-60 in 2.7 seconds. I guess .50g would be twice that or 5.4 seconds. A Demon is known to do 1.5G. 0-60 times 1.0g = 2.7 seconds 0.5g = 5.4 seconds 0.25g = 10.8 seconds
Considerably higher and dependent on tire choice, wheel width, and suspension tuning. I've datalogged well above 1.0 g in both cornering directions, and very close to 1.0g under braking in my lightly modified '08 GT (shocks, struts, sta-bars, and mild performance alignment settings . . . but still on OE springs). On true street tires (MPSS). I've never tried for a peak forward acceleration number; these are from a road course track day where pulling 0.31g in 3rd gear with a 4.6L is probably all I should expect. Data is from an Aim Solo datalogger since the 2008 GT did not come with any datalogging or g-measurement from Ford. Norm
Those cornering numbers do look typical for most peoples' moderately enthusiastic cornering. Most people normally drive at and below about 0.3g. 0.5g walks away from most other traffic you're likely to meet, and 0.7g runs away and hides from all but maybe 1 in at least 10,000. Norm
When I had my 2014 GT the best handling mod I did was putting big fat Michelin MPSS tires on all four corners. Rims were Ford Racing, about an inch wider than original. I bought them here from the forum member who's father owned the Ford dealership in NJ or Maryland I think. Best braking was 0.98 and cornering was 0.86-0.88 or so.
That is what they say. Tires are key to big numbers. Chrysler says the 1.5g on the Demon is mostly due to the very sticky tires.
So I found a Ford base line Accelerometer readings for a good running 2020 Mustang GT. It's .80g brake then .60 accel with .50 side to side. I am getting there. I have not pushed side to side yet. Ferrari says 1g all the way around.
Lateral g's are probably the hardest directions for most drivers to get comfortable with, because getting up there involves increased slip angles - small amounts of angular sliding at the contact patches. That doesn't feel quite as "stuck down" as driving in a straight line does, and as a subliminal thing may be enough to cause most people to hold back or step back. Norm
Hard for me to say in any more detail than I posted in #4. Then again, I've been able to maintain this sort of pace for 20 or more minutes at a time while remaining almost as relaxed as I'd be in easy street driving, so my basis is somewhat different from yours. Horizontal axis on the g-g diagram is cornering. Norm
I guess it's the difference of what Ford thinks and Ferrari thinks. I am not sure if they knew each other or not. My last addition will be the Boss rear sway bar. It's about a hour or so job. Out comes the 24mm and in goes the 25MM bushings and all. Might or might not make a difference I can see or feel.
These numbers were generated with a '14 GT Track Pack with stock suspension, 19x10 Forgestar wheels and 285/35 Kumho ECSTA PS91 tires during an autoX. A basic stock, street car setup. Way better numbers can be attained with more serious wheels, tires, springs/dampers, adjustable swaybars and the driver.
For me it's like baby steps. Street driving around the neighborhood vs a true Auto Cross in a Base Car with a few upgrades. For sure Ford on the advertisement of Track Apps gives .8 for brakes .6 for accel and .5 left and right.
Take your time. Run a few autocrosses, where the speeds and risks are low. After that, maybe find an HPDE event that offers "parade laps" (typically in lead-follow format at speeds comparable to highway driving). Last I knew, SCCA's Track Night in America was offering this opportunity. Norm
About all I am going to get street driving and 255/45/18 Run Flat Tires. Well within spec for a street driven Mustang GT.
