Rubber suspension???

[thornado327i]

Came accross something like this:



It's suppoesed to be "wrapped" around the spring - here's how:



Guys who sell that (about 1,20USD each) claim that it makes the suspension stiffer and prevents the car from sitting too low when you have passengers on board or a full trunk of whatever.

To me it sounds like a total garbage. But maybe someone has heard any proven opinions on those, or even better tried them on.

Seems to me like another e-bay cheap stuff for "wish I had a cool car" freaks...

What do you think?

[alpinaclone]

I've seen those in circle track catalogues, like Speedway Motors. They even sell them in diferent hardnesses to adjust spring rate. I can't comment on effectiveness though.

[Schniddy]

Just sell whatever you have now and get stiffer springs.


done

[ldsbeaker]

I would DD it for about a month, check it out. $1.20 a piece? Yeah, no problem.

[e34john]

Seems like it would work to prevent things from getting too low under heavy loads, maybe I should try them because my tires rub sometimes.

[gearheadE30]

looks like a cheap alternative to a good suspension. I can see how it would help load capacity, but there is no way that rubber blocks will increase stiffness.

[DaveSmed]

Just the ticket for your '84 Caprice with the sagging rear springs!

[1991 318is]

These are what NASCAR guys call spring rubbers. They have different hardnesses but are stiff urethane. They shorten the length of the spring and increase spring rate. Porsche has a nice setup on the racing 911's that uses a metal version that moves up and down on the threaded shock body above the main spring perch. Being metal they change the spring rate in a more direct manner than a urethane piece which has some flexibility. The main advantage in racing is you can soften a corner of the car with minimal effect on "wedge" or cross weight. NASCAR and the factory Porsche race cars use them and they sure aren't "wish I had a cool car" freaks...

[thornado327i]

Wow. You sure kept me waiting with your replies for a while ;)

Maybe I should try them. My springs are great when it comes to cornering, but whenever I have to transport something heavy, or have 3 passengers on board the car sits a bit too low, and my wheels rub a bit on bumps (very few roads without them out here).

As I stated above, I seriously doubt they will make my suspension work better (it's just some piece of rubber).

Just wondering - given you have a -35mm rear springs - do your cars get lower a lot under some load? My springs are Jamex (Dutch) and they are defi... definet... undoubtfully (yes!) not HRs, but the are being considered pretty good. Especially that we have a real flood of cheap "german" springs out here.
When it comes to Jamex springs - that's the only problem discovered so far - they get too low under some load. Other than that - they work great. So my question is - do HRs (for example) behave better under such conditions?

[e34john]

where did you see them? I will give it a try on the rear. hope it will allow me to carry passengers

[Eric]

this would be good to use in classes like spec E30 to corner balance a car....

[thornado327i]

where did you see them? I will give it a try on the rear. hope it will allow me to carry passengers

Polish ebay ;)
Or actually an equivalent of eBay - http://www.motoallego.pl

So far, I'm running 14" steelies with 185/65 rubber - no rubbing there. But when the winter ends, and my 16/9" are back on the car - I'll give those things a try.

[e34john]

Can't find them around here. All i see are rubber ones that cost about 50 dollars a set.