Caster Adjustment

WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Adjust the caster after adjusting the camber.
When adjusting the caster, abnormal noise may occur if the adjusting cam bolt and nut are reused after removing the adjusting cam bolt installation nut. When adjusting the caster, be careful not to completely remove the adjusting cam bolt installation nut.
- If the installation nut for the adjusting cam bolt is removed, replace the adjusting cam bolt and nut with new ones.

Loosen the installation nut of the adjusting cam bolt on the rear side of the front lower arm.

Fig 1: Identifying Adjusting Cam Bolt (Caster Adjustment)
Courtesy of MAZDA MOTORS CORP.

Rotate the adjusting cam bolt in either direction to adjust the caster.

VEHICLE HEIGHT AND CASTER ANGLE SPECIFICATION

Vehicle height⁽¹⁾

Caster

350-358 {13.8-14.0}

8°18'±1°

359-367 {14.2-14.4}

8°04'±1°

368-376 {14.5-14.8}

7°51'±1°

377-385 {14.9-15.1}

7°38'±1°

386-394 {15.2-15.5}

7°24'±1°

⁽¹⁾	Vehicle height: From the end of the rear fender to the center of the wheel (mm)

	Left wheel	Right wheel
Increase	Clockwise	Counterclockwise
Decrease	Counterclockwise	Clockwise

NOTE:

Refer to the following figure to adjust the angle of the adjusting cam bolts in single increments.

ADJUSTING CAM BOLT ON REAR SIDE OF FRONT LOWER ARM

Scale	Link movement (mm)	Caster change amount (angle)
1	1.9 mm {0.075 in}	0°34'
2	3.8 mm {0.15 in}	1°05'
3	5.3 mm {0.21 in}	1°32'
4	6.5 mm {0.26 in}	1°53'
5	7.2 mm {0.28 in}	2°06'
6	7.5 mm {0.30 in}	2°11'

Tighten the nut.
Tightening torque
- 135-165 N.m {14-16 kgf.m, 100-121 ft.lbf}
Adjust the total toe-in. (See TOTAL TOE-IN ADJUSTMENT .)