Contents
- 1 How long do urethane bushings last?
- 2 What is the advantage of polyurethane bushings?
- 3 Do you need to grease polyurethane bushings?
- 4 Is polyurethane better than rubber?
- 5 Is lithium grease safe for polyurethane?
- 6 Which is better rubber or polyurethane bushings?
- 7 Why do you need polyurethane bushings on a stock car?
How long do urethane bushings last?
Summary
| Polyurethane Suspension Bushings | Rubber Suspension Bushings | |
|---|---|---|
| Hardness | Harder and less pliable | Softer and more pliable |
| Lifespan | Life of vehicle | Same as original bushing |
| Squeaking | Small chance of squeaking | No chance of squeaking |
| Maintenance | Greasing every 4-5 years | None |
What is the advantage of polyurethane bushings?
Poly bushings are noticeably harder than the stock OE rubber on your vehicle. This makes them a much better option for holding alignment of suspension parts like your control arms, leaf springs, or even isolating your differential. This translates to less body roll and more traction when turning.
Do polyurethane bushings improve handling?
The same concept applies to any vehicle’s suspension system. Polyurethane bushings like Energy Suspension’s Hyper-Flex product line replaces the factory rubber pieces that occupy the joints where your car’s suspension components connect, aimed to improve handling performance while also increasing longevity.
How long do Powerflex bushes last?
As long as the standard rubber bushes work without serious failure for two or three years then the manufacturer is happy. Would fitting of polyurethane bushes make you buy one car in preference to another make?
Do you need to grease polyurethane bushings?
Polyurethane bushing manufacturers advise to never use a petroleum based grease for poly bushing lubrication. Polyurethane should only be lubricated with one specific type of grease to insure long bushing life, and squeak-free performance, Silicone based synthetic water-proof grease.
Is polyurethane better than rubber?
Polyurethane has higher abrasion, cut, and tear resistance. It can be made in a higher hardness rating and it has better load bearing capacity. Finally, polyurethane looks better than rubber. In some cases this will not matter but a polyurethane part will always look much better than its rubber counterpart.
Do you grease polyurethane bushings?
Does polyurethane last longer than rubber?
Polyurethane typically lasts longer than rubber, especially in applications where it’s constantly stretched or otherwise exposed to stress. Both rubber and polyurethane are elastic and flexible.
Is lithium grease safe for polyurethane?
Lithium based grease adheres to metal very well, has a high heat tolerance, and is water resistant making it another possibility for use with polyurethane bushings. One of the additives commonly used in lithium grease is Moly (Molybdenum Disulfide) which is actually a common additive to PTFE compounds.
Which is better rubber or polyurethane bushings?
First of all, polyurethane bushings are not strictly better than rubber.
What’s the life expectancy of OE bushings?
Whether you’re restoring a classic that was buried under a pile of junk in a barn, or having the third set of body mounts installed on your work truck, then you know that there is a definite life (death?) expectancy for OE suspension bushings.
How often should polyurethane bushings be lubricated?
There is some maintenance required since polyurethane bushings work best when lubricated to eliminate the chance of squeaking, be most effective, and extend their lifespan. The good news is that if lubricated during installation they should not need maintenance for 5 years or so.
Why do you need polyurethane bushings on a stock car?
There are a few reasons you might consider installing poly bushings but most boil down to finding a better balance between performance, durability, and comfort. There are a lot of differences between a NASCAR stock car and a stock Honda Civic and one of those is the type of suspension in each.