Mazda RX-8 Manual page 1621

Total Toe-in Adjustment
1. Loosen the locknut of the tie-rod end.
2. Remove the rack boot clamp.
3. Adjust the total toe-in by rotating each tie rod (left and right) in the opposite directions by the same
amount respectively.
Total Toe-in Standard
2±4 mm {0.08±0.15 in} (0°11'±21')
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NOTE:
Toe angle changes by approx. 5 mm {0.2 in} per one rotation of the tie rod for one wheel.
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Each tie rod has a left-hand thread. When increasing the toe-in angle, rotate the right tie rod
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toward the rear of the vehicle, and rotate the left tie rod toward the front of the vehicle by the
same amount.
4. Tighten the locknut of the tie-rod end.
Tightening torque
37.0    49.0 N·m {3.78    4.99 kgf·m, 27.3    36.1 ft·lbf}
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5. Verify that the rack boot does not have any twisting, and install the rack boot clamp.
(w) RX-8 Suspension
Page 64