Total toe is the combined toe relationship of the left and right wheels on an axle. It is essential for understanding tire scrub, but it does not by itself show whether the steering wheel is centered.
Total toe is the sum of the two individual toe values.
It is the primary toe value associated with axle-wide tire scrub.
Correct total toe does not guarantee correct individual toe.
Rear total toe and thrust angle must be considered together.
How total toe is calculated
When toe-in is shown as positive, total toe is usually calculated by adding left individual toe and right individual toe. For example, equal small toe-in on both sides produces positive total toe. Equal toe-out produces negative total toe. The sign convention and units should always be confirmed on the aligner screen.
Why total toe matters for tire wear
If both wheels on an axle point too far inward or outward, each tire must scrub sideways as the vehicle moves. The resulting wear often appears as feathering across both tires. Because the error acts continuously, tire wear can develop even when the driver does not notice a strong pull.
Total toe is therefore a key adjustment target. However, setting only the total without balancing the individual readings can move the steering wheel away from center or cause the front axle to follow the wrong reference.
The same total toe can produce different steering results
| Left toe | Right toe | Total toe | Likely result |
|---|---|---|---|
| Equal toe-in | Equal toe-in | Correct | Centered distribution if referenced to the correct thrust line. |
| Too much toe-in | Equivalent toe-out | Correct | Steering wheel displaced even though total is correct. |
| Both excessive toe-in | Both excessive toe-in | Too positive | Tire scrub across the axle. |
| Both excessive toe-out | Both excessive toe-out | Too negative | Tire scrub and possible instability. |
Rear total toe
Rear total toe influences tire wear in the same way as front total toe, but rear individual toe also establishes thrust angle. A rear axle can have acceptable total toe while one wheel points inward and the other outward. The tires may avoid severe total-toe scrub, yet the vehicle can travel with a significant thrust angle.
Where rear toe is adjustable, center the rear total and individual values before adjusting the front. Where it is not adjustable, document the condition and align the front wheels to the actual thrust line.
Adjustment practice
- Watch individual and total values at the same time.
- Use the correct sign convention and units.
- Correct rear total toe before front toe where possible.
- Balance front individual toe around the thrust line.
- Recheck total toe after all locknuts are tightened.
- Do not accept a correct total with an off-center steering gear.
Frequently asked questions
Can total toe be correct if both individual values are wrong?
Yes. One side can be toe-in and the other toe-out by an equal amount. The sum is correct, but the steering or thrust relationship is not.
Which value causes tire wear: total toe or individual toe?
Total toe is closely related to axle-wide scrub. Individual toe shows how the condition is distributed and is essential for steering-wheel position and thrust diagnosis.
Should total toe be adjusted to zero?
Only when the selected vehicle specification calls for zero. Many vehicles specify a small amount of static toe-in or toe-out.
Technical content reviewed for TreadPlus Learn v1.0 · Updated July 16, 2026