FORD Focus ST 2013 Replica
Tuned to replicate Focus ST 2013
Comfort Medium
CAR : Ford Focus ST '13
Tire : Comfort Medium
Specs
Horsepower: 252 HP at 5300 RPM
Torque : 267.8 ft-lb at 2500 RPM
Power Limiter at : 92.5%
Weight: 1462 kg
Ballast : 191 kg
Ballast Position : -50
Weight Distribution : 60 / 40 as the real car spec when tested.
Performance Points:
431
GT AUTO
NO Oil change
Improve Body Rigidity (
NOT INSTALLED )
Wheels : Stock
Car Paint : White or Orange or Blue
Tuning Parts Installed :
Intake Tuning
Fully Customizable Suspension
Adjustable LSD
Fully Customizable Dog Clutch Transmission
Weight Reduction Stage 2
Suspension - Ford Factory ST Tuned Springs Ratio + Damper with
ST Tuned Street/Track Alignment Range
Front, Rear
Ride Height: 120 120
Spring Rate: 4.77 5.11
Dampers (Compression): 5 4
Dampers (Extension): 6 8
Anti-Roll Bars: 4 3
Camber Angle: 1.3 2.0 ( Front camber : -1.30 +- 0.30, Rear Camber : -2.00+-0.00 )
Toe Angle: 0.10 0.16 ( Front Toe In : 0.10 +- 0.15, Rear Toe In : 0.16 +- 0.56 )
OPTIONAL Factory Street Alignment :
Front
Camber ( Driver Side ) : -0.83 +- 0.75
Camber ( Passenger Side ) : -0.93 +- 0.75
Total Toe In : 0.20 +- 0.20
Rear
Camber : -1.35 +- 0.75
Total Toe In : 0.38 +- 0.20
DOG CLUTCH TRANSMISSION - Corrected Stock GETRAG MMT6 Dual Output Shaft Ratio with 4.063 Final
Install all power parts
Set Default
Set Auto Max Speed at 280kmh / 174mph
Adjust each gear :
1st 3.231
2nd 1.952
3rd 1.321
4th 1.029
5th 0.821
- Actual Ratio : 1.129 with 2nd final drive 2.955
6th 0.685
- Actual Ratio : 0.943 with 2nd final drive 2.955
Set Final :4.063
LSD - Traction Control Based Front Brake and Torque Vectoring Electronic LSD
Initial Torque : 15
Acceleration Sensitivity: 23
Braking Sensitivity: 5
OPTIONAL 2014 LSD ( Low Lock ) :
Initial Torque : 5
Acceleration Sensitivity: 15
Braking Sensitivity: 5
Brake Balance:
7/10 ( personal BB) or for ABS 0 wheel : 5/8, for ABS 1 - feel free to use your preferred brake balance.
Recommended setting for DS3 user :
Steering sensitivity at +1 or +2, all aids off, except ABS 1 ( if not comfortable with ABS 0 ) with 7/10 brake balance as starting point.
Notes :
The Ford Focus ST 2013 is one of the car in GT6 that is a stat disaster 
, wrong weight distribution, torque figure, spring rate too high and broken gearing.
For this replica, I made a corrected version, not really perfect, but as close as possible replicating the real car.
The Ford Focus ST 2013 has 270lb-ft torque, while in GT6 stock value is too low, I have installed intake tuning to get closer at 267.8ft-lb. Power limiter used to get 252HP stock value. Now, onto the weight distribution, the real car has 60/40 distribution, GT6 once again wrong, so I installed weight reduction stage 2 and put some ballast at -50 to get the proper distribution. Curb weight officially at 3223lbs / 1462kg.
For suspension, the stock spring rate is too high in GT6, and the real life stock value can't be reached ( not low enough on GT6 ). I chose to use the spring ratio instead and set the lowest possible spring rate on GT6.
The real car has 30N/mm or 171lb/in spring rate at the front and 32N/mm or 183lb/in spring rate at the rear, based on Ford Official documentation, but when tested by well respected suspension company, the actual rates are =
Front : 29N/mm or 166lb/in
Rear : 31N/mm or 177lb/in
Slightly lower than official stats.
For GT6, I used 4.77kg/mm or 267lb/in spring rate at the front and 5.11kg/mm or 286lb/in spring rate at the rear. This retains stock spring rate ratio, and I have tuned the damper and ARB to maintain balance similar to real life review, nimble with surgical precision while still can bite back on the limit.
I have also used Ford factory alignment ( camber and toe ), the alignment value used is recommended value by ST experts, while for daily driving factory alignment range are as below ( OPTIONAL ) :
Front
Camber ( Driver Side ) : -0.83 +- 0.75
Camber ( Passenger Side ) : -0.93 +- 0.75
Total Toe In : 0.20 +- 0.20
Rear
Camber : -1.35 +- 0.75
Total Toe In : 0.38 +- 0.20
The overall range of values are similar, but the one used on this replica offers better performance at the track.
Gearbox is another one that needs fixing, the real car uses Getrag MMT6 with dual output shaft which result in 2 different final drive, 4.063 final drive for the 1st to 4th gear, while 5th and 6th uses 2.955.
GT6 incorrectly set the 5th and 6th, which result on overly long gearing and useless. I have set the 5th and 6th with calculated effective ratio when 4.063 is used instead, this will replicate real life vehicle speed at max engine speed on all gears from 1st to 6th.
For LSD, I have setup in conjunction with brake balance to achieve similar effect to real life electronic based LSD and torque vectoring as well as cornering understeer control. I have use low preload and medium lock rate to give some locking action which reduce inside wheel spin and give some stability on mid corner, while the rear bias brake balance will help to give illusion of brake based system at the rear axle.
The real Focus ST uses several electronic system in synergy to maintain handling balance under heavy cornering, there's no mechanical parts that acts like limited slip differential. First is the brake based LSD, which relies on traction control system to maintain traction by applying brake pressure on each front wheel to reduce understeer. The Enhanced Torque Vectoring Control and Cornering Understeer Control work hand in hand on both front and rear axle to maintain balance, encourage oversteer, apply inside and outside brake pressure according situation. With trail braking, the Focus ST can be easily shifted to oversteer on entry, up to certain degree. When the car is really pushed hard at track pace, the brake based system is proven not really reliable, often resulting in overheated brake after several hot laps. When this happens, heavy understeer will slowly creep in which will show the Focus ST true colors.
Here is a quote from Randy Pobst on his experience at hot lapping the Focus ST at Laguna Seca MotorTrend Best Driver's Car 2013 :
Several tests review also shown that after several laps, the Focus ST tend to lose it's charm and starts to understeer as the braking performance reduced due to heat build up in the system.
I mainly tested the car at Tsukuba, Big Willow and Laguna Seca. At Laguna Seca, it can easily lap in 1:48s on comfort medium. The Best Driver's Car lap record is 1:49.30, driven by Pro Driver Randy Pobst ( MotorTrend )
Below I also provided a picture with detailed gearing and speed stat for the Getrag MMT6 on the Focus ST 2013, and a replay of the run at Laguna Seca for comparison to Randy Pobst lap 
Watch it, to find out the similarity and difference in cornering as well as speed at braking points. Drive the Focus ST replica at Big Willow and Laguna Seca and hopefully you'll find pleasure like I do.
View attachment 228860
UPDATE : Added optional LSD with low lock to better reflect non mechanical LSD of the real car.
CH to CS with the Ferrari 512BB gives a lot of difference that grows to seconds the higher the speed / longer the distance. And your take on GT6 default tires is simply wrong - they have much higher grip than factory fitted tire, take a look at my replicas and their targeted real life lap times, almost all of the stock factory replica uses comfort tires. And I'm not even touching the weight + distribution ( almost all of them wrong ), alignment values ( all wrong 
I'm not sure what went wrong there...
