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TR2/3/3A Rear leaf spring brass and Delrin bushings ?

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On a street car rubber lasts longer and improves ride quality. On the track, hard bushings control suspension movement and improve handling. So, it's really a choice of how you want to use the car.
 
The nylon bushings in the front make a noticeable difference moving the wheel from a stop. At first I did not like nylon bushings, but after i drove for a while I changed my mind and they are a good improve.

Steve
 
No experience with these in TRs, but it is a big issue in the early Porsche community. Rubber bushings work by bending, but the delrin ones must slide, in a joint that is not designed for that. The result has been wear and loud squeaking--enough to drive the user nuts, and a noticeable difference in the ride. Greasing them helps, but not for long. Dunno if this is an issue in TRs, but after listening to many negative reviews, I've never been interested in installing them, in any car.

I return to the old aerospace industry saying: "better" is the enemy of "good enough."
 
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