What would you guys recommend to tune to help eliminate on throttle understeer for a RWD car? Any tips would be helpful, thank you.
When I’ve been fiddling around with tuning as a total amateur / novice - I’ve been using Microsofts Bing Chat bot (any chat bot would suffice) to answer questions like this.
Here is an example response for your question that might help:
Reducing on-throttle understeer in a rear-wheel drive car involves a combination of driving techniques and vehicle setup adjustments. Here are some strategies:
Driving Techniques:
- Let off the throttle: This reduces speed and allows the front tyres to regain traction1.
- Smooth Inputs: Avoid sudden changes in throttle or steering, which can upset the balance of the car2.
Vehicle Setup Adjustments:
- Shift Mass: Shift mass to the sliding wheels to increase normal force at the tyre contact patch1.
- Increase Track Width: Increase the track width at the sliding end of the car1.
- Fit Wider or More Grippy Tyres: Fit wider or a more grippy compound tyre at the sliding end to increase traction1.
- Adjust Suspension: Make alterations to geometry and vehicle set up1. For example, if understeer is occurring at corner entry after being hard on the brakes, you can increase droop on the rear wheels, lower the rear roll centre, or reduce the rear anti-roll bar stiffness1.
Remember, it’s important to make these adjustments in a safe and controlled environment, and to understand how they affect your vehicle’s handling before trying them on public roads. Always prioritize safety when driving.
Learn more
1suspensionsecrets.co.uk2
cinch.co.uk3
reddit.com4
low-offset.com
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Increase Differential ACC percentage and lower DEC %.
Raise Rear spring stiffness vs the front.
Lower front Anti sway bar in relation to the rear.
Thank you for the advice. Would anyone recommend any other options?
up the decel.
I would highly recommend watching one or multiple tuning instruction videos. It’s a give a fish/teach a man to fish situation.
The best thing I can recommend to you is to A: use either the ForzaTune Pro app on your phone or one of the multiple tools online. Google “Forza Tune Calculator” and the first few options are servicable. I personally use the app.
The videos will teach you how to get the car to FEEL the way you want it to. Not every car will feel the same, even with the same setup settings due to various factors. Feel is more important than raw speed. You can’t be fast in a car you can’t hang on to or put the power to the ground in.
Here are a couple of videos to get you started:
Just keep in mind that you are going to be told 100 different things about tuning in this game. It’s about 90% science, and 10% art. The only way to get a feel for it is to practice and try things.
I personally did exactly what I just explained to you and it has helped me immensely over just using the tools in the beginning. They are simply a good baseline from which to experiment from.
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How would increasing the decel help how the car behaves on throttle?
Just for clarifcation, where on track do you experience the issue the most?
- Coming out of a low speed or high speed corner?
- Middle/coming out of a long bend?
- Coming out of a chicane or hairpin?
And a little bit of upgrade setup info too. What might be an upgrade issue might not be best resolved by a tuning issue!
- Front and rear tire widths, as well as tire compound
- Front and rear weight distribution (Or engine placement, front, middle, or rear engine)
- If you have race front and/or rear aero (Some cars might have race aero stock, check tuning menu)
EDIT:
Also +1 on this. Tuning a car can make an impressive difference in how it behaves!
Some relatively easy tuning settings that I think everybody should learn how to change are
- Brake balance
- Gearing (Final drive & individual gears)
- Differential settings (Acceleration & deceleration)
- Anti-Roll Bars
- EDIT 2: Downforce (Front and Rear)
Other settings help too of course (spring rates, dampers, alignment, roll centers, etc.) but the four listed above can make a big difference themselves.
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