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OEM GS-F LCA (Caster) Bushings and Lowered Alignment *Alignment Attached*
Assistance request from any Lexus alignment gurus ..
- I recently found out that GS-F Bushings are compatible and have increased stiffness
- The GS-F Bushings come in 3 variations (+caster, neutral, -caster)
- When airing out my air suspension .. I noticed the front wheels touch the front of the fender covers, but the rear side of the wheel has about an inch clearance.
- I'm tempted to install the GS-F -caster bushings to improve clearance and handling.
Questions:
- Does lowering ride height change caster in the positive or negative directions?
- What does +20 mean for the caster correction? I assume that's 0.20?
- Will negative caster move the wheel toward the rear?
- Will a -.20 caster change dramatically reduce straight line stability? (overall will still be positive caster) It's said to increase steering response, and since its an OEM part, how bad could it be?
No alignment gurus I guess. However I was able to get an alignment print out post-air suspension and find some answers.
- Lowering ride height increases caster. My air suspension at ride height alignment reading is +5.7 and +5.5. AWD should be at +4.93.
- The GSF (negative) caster bushing "-20" is a 0.33 degree of correction
- Negative caster will move the wheel toward the rear (improving clearance)
- Installing the negative caster bushing will bring the vehicle closer to factory recommended spec (4.93)
- If you have AWD the front has camber adjustment, but it moves the lower arm. So it won't improve wheel clearance.
- Another interesting note is that I can not find ANY GSF posts/search results related to inner tire wear issues. Is it a cure all???
09-21-18, 12:27 PM
OEM GS-F LCA (Caster) Bushings and Lowered Alignment *Alignment Attached*
