# best single suspension upgrade **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 27, 2009, 10:18am UTC](https://forums.speedlife.net/t/best-single-suspension-upgrade/124822 "2009-05-27T10:18:59Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![240coupe](https://avatars.discourse-cdn.com/v4/letter/2/e495f1/32.png) [@240coupe](https://forums.speedlife.net/u/240coupe)\ **Post date:** [May 27, 2009, 3:13pm UTC](https://forums.speedlife.net/t/best-single-suspension-upgrade/124822/11 "2009-05-27T15:13:05Z")
> [@DIRECTV = No MSG?](https://forums.speedlife.net/t/directv-no-msg/22225/2): > > Wouldn’t recommend poly bushings for a number of reasons: > > -Unless you have a press to do all arms (lots and lots of bushings, time consuming) > -Arms will still remain non-adjustable > -They CAN crack too… don’t think they can’t. > -Will bind worse/increased friction, articulation reduced further. It’s smart/good to know that they require greasing maintenance and the proper way is to install zerk fittings on the bushings/arms. > -They will initially feel ‘great’, as things will be more tight/together vs the old worn bushings, but you will eventually go insane with the squeaking crashing noises… car will start feeling worse too. > -Too much pita in my opinion… over-advertised and marketed gimmick… People who race choose this options (and do it right with zerk fittings) due to class restrictions in their respective race series… > -Either go slightly stiffer OEM/NISMO rubbers or go spherical bearings and call it a day… best decision I made was going from polyurethane bushings to full spherical bearings. Yes it costs money, but gotta pay to play… > > My 2cents opinion… Unless you have a press to do all arms (lots and lots of bushings, time consuming) Their easy as shit to install with a vice. it can be done in under a day by one person. I pulled my subframe , installed solid subframe bushings , installed poly bushings then did the front bushings and had the car back together by the end of the day. all using your standard crappy 40$ canadian tire vice. So its not difficult and i wouldnt consider it time consuming. They CAN crack too… don’t think they can’t. Yes they could crack, but chances are the car will be a pile of rust before that happens. Will bind worse/increased friction, articulation reduced further. It’s smart/good to know that they require greasing maintenance and the proper way is to install zerk fittings on the bushings/arms. How would these cause binding ? “go spherical bearings and call it a day… best decision I made was going from polyurethane bushings to full spherical bearings. Yes it costs money, but gotta pay to play…” this is a good option if you have money to spend and dont dd ur car but for the average person who does dd their car and are looking for a feasible solution to bring the feel of their suspension back its not. and dont even contemplate winterdriving that. --- _[View the full topic](https://forums.speedlife.net/t/best-single-suspension-upgrade/124822)._