Having a low caster angle means you may want to increase the negative camber to get a reasonable level of grip, otherwise the car will be very unstable. Rallycross is for when you want your dirt racing to be a little dirtier. Setup spring rates for FWD cars according to following scheme: FWD Front Spring Rate (%): RWD Rear Spring Rate (%), FWD Rear Spring Rate (%): RWD Front Spring Rate (%). Making sure you get the right amount of tune on the springs of an off-road vehicle is one of the most important things to do. Soft front springs increase the front grip, Increasing downforce improves the handling, It's important to find a balance when tuning brakes. Here’s a guide on how to get to grips with tuning. For each %1 difference of car weight distribution from 47% rear downforce must be increased or decreased by 1.866667lb. Chassis Reinforcem. It's important to reach a balance between a high top speed and quick acceleration. is an important part of the game to learn if you want to squeeze every last bit of performance from your cars. For AWD cars set camber according to following scheme: Tire width directly influence camber settings. the higher the cars front weight is the higher the bump is required to avoid diving on turn-in.
Part 2 - General Tuning. Setting bump too stiff can result in understeer while entering a turn. Like tyre pressure, the alignment of the wheels affects the grip when driving in a straight line, or when you're cornering. 3.30-0.04166667=3.25833333, 3.25833333 - 0.25=3.00833333 --> Final Drive: 3.01, Example: AWD car, 325hp, stock power 300hp, stock final drive 3.30 keep the sliders aligned. 3000 / 2 * 52% * 100% = 780 depending on body type. High Power Cars with Standard Forza gearbox.
Too much downforce creates an excessive amount of drag, though, which decreases the top speed. Example: FWD car, 2900lb, 200 hp, drivetrain swaps available, Front: 100+2=102, 102*0.7=71.4 --> 71, Rear: 75+2=77, 77*0.4=30.8 --> 75 (minimum downforce). To sum up the impact of downforce on springs consist of two factors: amount of added downforce: for each 10lb added front downforce increase front springs by 0.5, for each 25lb added rear downforce increase rear springs by 0.5, deviation from balanced downforce: for each 2lb difference of front / rear downforce from balanced front / rear downforce increase or decrease front / rear springs by 0.5. Car Type Caster, Utility Car 5.0-7.0, Street Car 5.0-7.0, Sports Car 5.0-7.0, Race Car 4.0-5.0, Race Truck 4.0, Prototype Race Car 5.0-6.0, ------------------------------------------------------, Off-road Car 4.0, Off-road Truck 4.0, Off-road Race Truck 1.0-2.0. Sport Decrease front springs, Chassis Reinforcem. If you want to perfect your transmission, adjusting each gear ratio is the way to extract the best performance from the car.
If downforce levels are setup too high related to cars weight the car will become unresponsive and more difficult during cornering. This is especially important for the driven wheels. Low Gearing Cars with Standard Forza gearbox. Increasing or decreasing power via engine upgrades requires to adjust final drive to adjust the gearbox to the changed power band. Race Decrease3. Each car type has a minimum ride height that is required to have enough suspension travel during cornering. For a car with 47% front weight distribution and a Standard Forza race aero kit (50-100/75-200) balanced downforce is achieved when downforce sliders are aligned, e.g. If the rear anti-roll bar is too stiff it can cause the wheels to lift off the ground when cornering hard which can result in a pretty spectacular accident! For these cars the reference power is not the cars stock power but the power with installed homologated restrictor plates which is lower than the cars stock power.
Differential is for fine tuning corner entry and exit behaviour. Generally older cars require lower accel and higher decel than modern cars and race cars require higher accel and lower decel than road cars. : Minimum ride height works in 0.5 increments and is most of the time an integer number. 50/75, 75/137 or 100/200. Aero Kit Downforce, 1 Many cars don't have a stock rear wing, so in this case there is no downforce applied, Example: FWD road car with 2198lb, 64% wd, stock aero (10/25/25), front springs: 563.9, rear springs 370.9, Adding front and rear race aero kit with stock downforce 75/137 (balanced downforce for 64% wd is 75/169), Front spring offset: (75-10)/10=6.5, 6.5*0.5=3.25, Rear spring offset: (137-25)/25=4.48, 4.48*0.5=2.24,(137-169)/2=-16,-16*0.5=-8, total rear spring offset: 2.24-8=-5.76. Make sure to experiment with the tyre pressures to find a good compromise between high and low pressures. Also cars with stiffer suspension require less bump whereas older cars with softer suspension require stiffer bump. 1) Set ride height to lowest if the front ride height can be set below 2 inches, 2) Set ride height to highest if the maximum front ride height is below the minimum ride height. Here are the top 10 cars you need in your garage in the brilliant new Forza game.
For cars with higher front weight distribution rear downforce slider must be higher than front downforce slider depending on how much the cars front weight distribution differs from 47%. A higher final drive will give your car impressive acceleration levels but it can cause the car to bottom out, meaning it probably won’t have a high top speed. When tuning, you should lower the ride height as much as possible without the car bottoming out, so it may take some time to perfect your setup. As you upgrade your car further, adjusting the brake balance is integral to maximise the performance of the brakes. Making sure you get the right amount of tuning on the springs of an off-road vehicle is one of the most important things to do. 3.30-0.04166667=3.25833333 --> Final Drive: 3.26, Example: FWD car, 325hp, stock power 300hp, stock final drive 3.30 Sport Decrease front springs2, Chassis Reinforcem. For FWD cars set damping according to following scheme: AWD cars also require lower bump and higher rebound than RWD cars albeit not as much as FWD cars. Set the tire pressures accordingly. rear downforce > 3* max. But it can lead to even more understeer under braking. Also off-road cars require lower differential settings than road cars. Here you have to multiply front aero downforce with 0.7 and rear downforce with 0.4 after you performed the above calculation. So there is a sweet spot for setting up the ride height which I call optimal ride height. Distribution of front and rear spring rates is related to weight distribution, so cars with more front weight will require also higher front spring rates. 300hp-325hp=-25hp However, it can also lead to even more understeer under braking. Likewise for cars with lower front weight distribution rear downforce slider must be lower than front downforce slider to achieve balanced downforce levels. In this case multiplying the maximum downforce levels (or maximum / minimum in case of FWD) with 1.5 is required. State-of-the-art Facility. A low ride height lowers the centre of gravity and significantly improves the handling. In general for older cars the minimum ride height is higher than for modern cars and for race cars the minimum ride height is lower than for productions cars. Increasing downforce levels keeps the car in better contact with the road, heats the tyres quicker and improves the handling. In this case multiplying the maximum downforce levels (or maximum / minimum in case of FWD) with 1.5 is required, and with very low power (<=200hp) don't require as much downforce as usual. A good balance is important to find, because a poorly tuned anti-roll bar can heavily impact the handling of the car. As a general rule of thumb older cars require higher caster than modern cars, race cars require lower caster than street cars and off-road cars require lower caster than road cars. Having front and rear ride height sliders unaligned creates over- or understeer effects and is only required when tuning for grip, speed or specific tracks. The optimal ride height for a car is the lowest ride height possible that is not lower than the car types minimum ride height. A good starting point is 0.66 -per 1% weight distribution for AWD cars, i.e. Adding chassis reinforcement upgrade increases chassis rigidity (sport chassis increases chassis rigidity by 3%, race chassis increases chassis rigidity by 6%), i.e. Balanced downforce levels depend on the cars weight distribution and are distributed around the cars aerodynamic ideal front weight distribution of 47%. Tuning Calculator for Forza Motorsport and Forza Horizon. In this case rear downforce should not exceed 300lb for this car except when tuning for grip tracks which is covered in part 3. Setting up to specific downforce values depends solely on the cars weight and the type of installed race aero kit. Open Wheel Race Car 9-54% 14-51%, Open Wheel Sports Car 86-96% 59-80%, Open Wheel Street Car 93% 80%, -------------------------------------------------------------------------------------------------, Off-road Car 94-100% 57-80%, Off-road Truck 94-100% 57-80%, Open Wheel Off-road Car 87-95% 59-80%, Off-road Race Truck 79% 94%, Example: RWD road car with 3000lbs @ 52% wd. 20/20 is good middle ground for modern road cars around 3000lbs and 50% weight distribution and corresponds to an ARB stiffness of around 63%. However since possible drivetrain swaps can actually increase the cars weight as compared to cars stock weight there is a headroom of 300lb on top of the cars stock weight before reduction of downforce levels is required. Setup spring rates for AWD cars according to following scheme: AWD Front Spring Rate (%): RWD Rear Spring Rate (%), AWD Rear Spring Rate (%): RWD Rear Spring Rate (%) + Offset (0.05-0.9%, depending on body type). AWD cars require a lower ARB distribution than RWD cars to combat inherent understeer. Reasoning for that is that besides grip tires also provide a basic level of rigidity and therefore control. Too much downforce creates an excessive amount of drag which decreases the top speed. Also when performing a drivetrain swap on cars with a custom gearbox requires to adjust the final drive since cars with drivetrain swaps will always automatically be equipped with a Standard Forza gearbox which is scaled to a reference power of 400hp instead of the cars stock power in case of the cars custom gearbox (see above). It also can create rear tire spin while accelerating out of a corner. Exceptions are older road and off-road cars that require slight rear toe-in (max. Caster is also a car type specific setting. Set brakes for FWD cars according to following scheme: Brake distribution: RWD brake distribution + 1%. For FWD cars generally ARBs need to be setup in reverse to RWD with regard to ARB distribution. Toe-in increases overall stability of the car, but can decrease the responsiveness when turning into a corner. Each car has a "natural" caster that suits the cars suspension geometry best. Making the springs too stiff will cause the car to bottom out under heavy braking. Transmission tuning can be unlocked when installing a Race or Sport transmission upgrade to your car. Then fine tune the cambers to reach your optimum setup. Race cars that don't offer any engine upgrades like F1 cars or IndyCars would never require an adjustment of the final drive since you're always running them on stock power. If the rear anti-roll bar is too stiff, though, it can cause the wheels to lift off the ground when cornering hard, which can result in a pretty spectacular accident.