I talked about the tire pressure and the effects on the car. Helping to reduce or increase the oversteer or understeer of the car. That was the most basic setup instrumentation. Now, it is time to go one step further with toe alignment.
Toe setting represents the direction of the tires in relation to the center line of the car. If the tire or tires are straight ahead in parallel to this line, then we consider it is a zero car toe.
If the tires are pointing to the inside line, then it is consider a positive toe. Otherwise, with both tires pointing to the outside of the car and the center line, it is consider as negative toe.
Depending on where we apply this setting we can feel a severe change of the car’s behavior. Copying from the official setup guide:
Toe-in
Front: Adding TOE should increase stability in the braking zones and slow‐down the response to the initial turn of the wheel. The compromise is that TOE‐IN will produce an increase in scrub that will slow straightline speeds. more deviation to having the tires pointed straight, the more straight‐away speeds are negatively affected.
Rear: Generally, having the outside loaded tire in a corner slightly pointed IN or toward the apex of a corner helps rear grip and overall stability.
Toe-out
Front: Increasing TOE‐OUT will have the largest effect at corner‐entry by speeding up the car’s response to the initial turn of the wheel. The tradeoff can be straightline speed and stability.
Rear: At corner entry the outside tire is slightly pointed to the outside of the corner. The result is usually that the car rapidly transitions to oversteer as the grip limit is reached. Generally, Toe‐out is only used in road racing cars to combat a significant UNDERsteer condition that cannot be otherwise addressed.
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