Suspension Geometry Data
| Model | Camber | Castor | KPI | Wheel Alignment | Camber | Wheel Alignment |
| Spitfire Mk I & II | 2°POS | 3° | 6 3/4° | 1/16″-1/8″ T.I | 1/2°POS | 1/16″-1/8″ T.0 |
| Spitfire Mk III | 3°POS | 3 1/2° | 5 3/4° | 1/16″-1/8″ T.I | 1/2°POS | 1/16″-1/8″ T.0 |
| Spitfire Mk IV | 3°POS | 4° | 5 3/4° | 1/16″-1/8″ T.I | 1°neg | 1/32″-3/32″ T.0 |
| GT.6 | 2 3/4°POS | 3 1/2° | 6° | 1/16″-1/8″ T.I | 0° | 1/16″-1/8″ T.0 |
| GT.6 + and GT.6 Mk II | 2 3/4°POS | 3 1/2° | 6° | 1/16″-1/8″ T.I | 0° | 0+- 1/32″ |
| GT.6 Mk III | 2 3/4° POS | 3 1/2° | 6° | 1/16″-1/8″ T.I | 0° | 0+- 1/32″ |
| TR.4 | 2 1/2° POS | 2 3/4° | 6 1/2° | 0-1/16″ T.I | – | – |
| TR.4A | 1/2° POS | 2 3/4° | 8 1/2° | 1/16″-1/8″ T.I | 1/2°POS | 0-1/16″ T.I |
| TR.250 | 1/2° POS | 2 3/4° | 8 1/2° | 1/16″-1/8″ T.I | 1/2°POS | 0-1/16″ T.I |
| TR.6 | 1/4° POS | 2 3/4° | 8 3/4° | 1/16″-1/8″ T.I | 1/2° POS | 0-1/16″ T.I |
| Stag | 1° POS | 2° | 10 1/2° | 1/16″-1/8″ T.I | 1 1/2°POS | 0-1/16″ T.I |
NOTES:
1. Maximum permissible difference between left and right hand castor and camber is 1 degree.
2. Subject to note 1, the maximum tolerance of camber, castor and KPI. angles is +- 1°.
3. The use of the Swivel Plates is essential, partially when checking Spitfire rear suspensions. Without the use of the plates, side thrust can cause a difference of approximately 15%.