GS F/RC F LCA Bushings
#61
#64
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The offset is what changes the steering weight. +20' (the ' sign means "minutes") is equal to +0.33° of caster angle, which in the scheme of things is still quite small. In general, increased positive caster will make the steering feel heavier, increase high speed stability (more self-centering effect), and improve tire contact while turning at speed. I am not quite sure what you mean by "turn quality", but increasing the caster on modern cars with power steering typically doesn't really any drawbacks unless you go so extreme (as in like adding 5°) to where the above mentioned factors start to become negatives, so like the steering becomes so heavy its too hard to drive or is "dull". So if you were to go with the GS F bushings in the 0' offset, it would make the steering feel more responsive like I was describing above, but it wouldn't necessarily feel any heavier. As a side note, the RR Racing USRS bushings are based off of the OEM's +20' offset design, so thats why they increase the steering weight as well.
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