Rubber and polyurethane, while differing in a lot of ways, fall more in the middle of the spectrum. That just goes to show how important your choice of grease is, but all in all people have different experiences. The old bushings looked like chewed bubble gum. Others, however, want a part that lasts the lifetime of their vehicle. They switched their materials and the polyurethane type was translucent white while the true white is thermoplastic. Poly bushes might be ok for a weekend ride on smooth roads, but for a daily drive that does 50+ kms over typical winding, twisting, great driving roads with a few bumps and mildly irregular surfaces every day, they are a nightmare. As far as reducing NVH, rubber body mounts are no doubt softer. It’s waterPROOF and sticky as all get out. Even though the bushings are firmer, and resist shape change from high lateral loads, they are still have some give and shouldn’t cause any damage to the steel under your car. First, let me say Great Write Up! A higher durometer bushing will increase performance and alignment holding ability while decreasing comfort, so finding a sweet spot is the trick. So to these guys, cold or hot is relative. There is likely a polyurethane bushing that would fit your dimensions but it would not provide the same ride quality as the original bushings. The notion that rubber sway bar bushings have some sort of performance edge over polyurethane is a little far-fetched, just by virtue of the fact that rubber has much less resiliency than poly. Has anyone heard of or experienced damage from a too-stiff suspension after a hard turn? Polyurethane isn’t always the best fit for a particular vehicle use or part. To answer your question simply, we’re not aware of any product that would allow you to make your own rubber suspension bushings. Rubber is soft, and more importantly, takes damage from heat, road chemicals, oil and UV rays. Anyone else have some experiences with the longevity of rubber bushings vs polyurethane? Rubber bushings have to be created with a new outer bushing shell. Control Arm Bushings Replace factory control bushings with polyurethane control arm bushings to help improve handling and maintain alignment settings! This continually changing gripping of the bar is enough to vary the effective spring rate of the suspension so that re-bound damping by the shock absorbers starts off matching the spring rate (if set accurately) so the car turns in and settles on a corner instantly as it should with load evenly distributed front to back, then as the bushes start gripping the bar, the cornering load gets pushed unevenly from back to front because the bar is not able to perform its function of instantly transferring spring rate from the inside wheel to the outside when turning into a corner. Thanks Shawn. Shipping is about $14 : AVAILABLE NOW: Bushing Set for Cast Control A-arms 1990-1995 Many poly bushing manufacturers offer a lifetime warranty on their polyurethane bushings to show their confidence in the material standing the test of time. Rubber is so compliant that a sharp turn at speed distorts the bushing which fails to properly locate the bar in that moment, reducing its effectiveness. Hope those body mounts work out for you and if you’re looking for some control arm options we hope you’ll keep Suspension.com in mind Please give us a call if you see anything you like. Over time, unfortunately, gunk can get in the tacky grease or the grease could rub off. (This is contingent on the entire suspension system being polyurethane, more later). The front control arm bushings will give you a little more vibration, but they hold the alignment of your front wheels longer and more securely than rubber. Now, body mounts aren’t an articulating position, but we have also seen some poly bushings that had been installed on a Jeep YJ 20+ years ago and hadn’t even been regreased in all that time. The long and short of his response was that it will probably make very little difference. 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I’ll start with what we seem to agree on: They would typically be doing that already (anyway), and if it is an issue you can try tightening their fastener or putting foam tape in mating areas to decrease their movement. This tight fit compresses the rubber bush so that it firmly locates the bar and the consistent elasticity of the rubber over a very long period gives you far better better control than any poly D bush, and than includes un-grooved ones, grooved ones, internally knurled ones and even ones with PTFE inner linings. then tighten the nut more only by 2 or 3 threads. as far as wear, with exception to 2 areas they are pretty much indestructible. Polyurethane bushings are generally considered a durable performance option but some lower durometer poly bushings can offer a comfortable ride while still maintaining their shape better and longer than rubber. 3. a. Polyurethane doesn’t have that problem. I didn’t get a real good answer on why the two bushings have different grease retention designs, but I would probably need to talk to one of their engineers for a full answer. The industry has come a long way since the first urethane bushings were introduced and most manufacturers offer lifetime warranties these days, and they wouldn’t be in business long if they were having to send customers free bushings all the time. That company does have some rubber bushings in the control arms they sell (though I don’t think they sell them individually) and some are rated at a 90A durometer, which is really high, but when thinking about bushings higher isn’t always better. With the feel of polyurethane, the vehicle seems to be an extension of the driver himself…. How will I know if you replied on my comment,does it go to my e mail? 2,005 results for polyurethane control arm bushing Save polyurethane control arm bushing to get e-mail alerts and updates on your eBay Feed. I can’t tell you from personal experience (anyone else?) PTFE lining is actually employed in rubber D bushings more often as a way to increase their lifespan since continual torqueing of rubber causes its deterioration. Thanks for the quick response, Josh. I know the original rubber bushings have a ShoreA hardness of around 60-65 ShA. Poly bushings are a free floating design and do not twist like bonded rubber bushings, so denser material combined with lower internal stress means poly bushings generally last much longer. The lower the durometer the more “give” the bushing will have which means more absorption while higher durometers will hold alignment better in hard, quick turns. Low MaintenanceOur Poly/Delrin bushings virtually eli If liberally applied during install you shouldn’t need to grease them again for at least five years. the shorter the lifespan of your suspension components. I love the poly, but it just seems like the car is capable of so much more. I spoke with a representative of SuperPro, a highly respected aftermarket suspension parts manufacturer, to get some expert insight on this topic. How important is putting the bolt’s head downward and the nut’s on This is especially true with high stress parts like the control arm bushings or sway bar bushings. Since being harder (rigid ), perhaps over tightening of polyurethane Any thoughts appreciated. As an added benefit, POLYGRAPHITE® is impervious to grease, oil, weather, and other natural elements and will never dry rot. I’m looking to really maximize my f body handling.at close to 2 tons not an easy task lol. Vertical bolt with a tube outer sleeve type. Thank you and Merry Christmas. Perrin Front Control Arm Bushings - STI 2008-2019 / WRX 2008-2019 / BRZ 2013-2017 / FR-S 2013-2016. Short answer is “no” with an addendum concerning metal joints. This has led polyurethane bushing engineers to incorporate a design that retains grease on the bushing. These polyurethane bushings provide the longevity and performance needed to maximize a suspension's efficiency. It will hang in there through a lot of punishment and keep those bushings quiet. Prothane polyurethane bushings are designed to last up to 3 times longer than standard rubber bushings and will typical improve handling and performance. Sorry we couldn’t be more help and hope you find something that will work for you. Not me. OEM bushing, spring, absorber, sway bar, engine/transmission/diff mounts, change in all of these stress/vibration absorbing parts to stronger parts would eat up a vehicle’s suspension/chassis lifespan. gearing this car for track only use. Rubber is what comes standard when your car is brand new. This will give the bushings a extra amount of grease retention so it can outlast any water or mud that makes it’s way in-between the bushings and sleeves or housing and keep those bushings quiet. Without all the dimensions I can’t say for certain, but both brands offer bushings with the inner diameter you’re looking for. Put it back together the way it came apart and torque to the factory specs. Do you happen to have any pictures of those crumbling poly bushings? I ran your setup by our resident ASE Certified mechanic and he said you’re at a point where you need to decide if you want a dedicated track car or something you can drive comfortably on the road. If the bushing rotates and rubs the outer metal shell as the suspension travels, squeaking can occur. Let us know how it’s handling and good luck on the track. Hope this helps with your decision David. If the rubber bushing is replaced with say solid metal bushing, there’s simply close to zero stress absorbtion compared to rubber bushing so big amount of stress will transfer to B part as a whole. Not only is polyurethane weather proof, it’s also wear resistant. Powerflex Front Control Arm Bushings are the ideal replacement for the bushings on your E46 323i/325i/328i/330i* or Z4 2.5i/3.0i/3.0si. Prothane's polyurethane is a firmer bushing than the O.E. Precision engineered for your vehicle Tested to outperform all comparable products on the market $13.86 - … Just imagine how often you’d need to replace rubber endlinks. As a result of this, I have had 3-4 times the life out rubber than I have ever had from multiple generations of poly bushes. Using a rubber bushing as a replacement will give you the same feel your vehicle had before the rubber failed. rubber bushings with Prothane's polyurethane control arm bushings. I just absolutely hate redoing/fixing work and squeaking noises. If you decide to go with poly be sure to check in later and let us know how they do. There are softer things than rubber, like jello, and harder things than polyurethane, like aluminum or metal joints. I have a 2015 Camaro SS and I’d like to keep it for a long time.