Advice Blog

As MX-5 enthusiasts, we understand the thrill of driving this iconic roadster. Its nimble handling, responsive steering, and undeniable charm make it a favourite among car lovers. But did you know that upgrading to Polybushes can take your MX-5 experience to a whole new level?

We’ve teamed up with MX5Parts to create an insightful video that dives deep into why fitting Polybushes is a key for your MX-5. Here’s why you should watch:

1. Unmatched Performance

Polyurethane suspension bushes offer superior performance compared to standard rubber bushes. Our video explains how Polybushes provide better stability, improved handling, and more precise steering. You’ll see real-world examples of how these enhancements translate to a smoother, more controlled driving experience.

2. Enhanced Durability

Rubber bushes deteriorate over time, leading to a less responsive suspension. Polybushes are designed to withstand the harshest conditions, ensuring they last significantly longer. This durability means fewer replacements and more time enjoying your MX-5 on the road.

3. Easy Installation Guide

Fitting new bushes might seem daunting, but our video breaks gives some installation tips to make the job easier. Even those new to car modifications will feel confident tackling this upgrade.

4. Real Customer Testimonials

Ellis is an enthusiastic MX-5 owner (and employee) that’s made the switch to Polybushes. His stories and feedback provide valuable insights into the benefits he’s experienced, making it easier for you to decide if this upgrade is right for your MX-5.

5. Expert Collaboration

Our partnership with MX5Parts ensures that you’re getting advice from the best in the business. Their expertise in MX-5 components combined with our knowledge of Polybushes creates a comprehensive guide that you can trust.

6. Value for Money

Upgrading to Polybushes is a smart investment in your MX-5. Our video outlines the cost-effectiveness of this upgrade, highlighting how it can save you money in the long run by reducing the need for frequent replacements and repairs.

7. Preserving Your Classic

For those with classic MX-5 models, maintaining original handling characteristics while upgrading components can be challenging. We discuss how Polybushes respect the heritage of your car while enhancing its performance, ensuring you get the best of both worlds.

Watching our video will not only inform you about the technical benefits of Polybushes but also inspire you to take your MX-5’s performance to the next level. Don’t miss out on this opportunity to learn how a simple upgrade can transform your driving experience.

Tune in, get inspired, and let’s make your MX-5 even better together.

What are suspension bushes and what do they do:

Suspension bushes are pieces of material, generally rubber that are fitted where the suspension arms are bolted to the chassis. Along with the springs and shock absorbers, they dampen Noise, Vibration and Harshness NVH picked up from the roads. So, why fit Polybush?

A rubber bush, even from new, that is identical in shape, size and material hardness to Polybush, will, during braking and cornering, deflect and deform even more than it’s Polyurethane counterpart, changing your suspension alignment.
Polybush’s longer-chain chemical bonds give greater strength which resists this movement and requires more force to move. This is due to its high Young’s modulus (which is a mechanical property) meaning that your alignment is kept in check, maximising grip.

Enhanced Performance Around Corners and Under Braking: Polybush vs. Rubber

What this means in real life, is with rubber bushes, when you turn into a corner in your Fiesta Mk6 the suspension will flex excessively, causing the inside wheel to have play, (Toe changes) thus, compromising grip. (Camber changes) This can be felt as soft or “laggy” steering in tight/fast corners.

Polybush’s resistance to deflection keeps your alignment intact and your wheels true to your intended path. This translates to improved stability, precise steering control, and enhanced confidence behind the wheel, especially during aggressive cornering and braking…
Like track days, or B-road blasts. This can be seen in the diagram below showing the Mk6 wishbone fitted with Polybush and its alignment maintained

In the next diagram, which compares diagrams 1 & 2 from a side angle, we can see how the Grey Rubber bush has distorted from its centreline (CL) compared to the Red Polybush at the top, changing the toe angle and camber.

 

Understanding Camber & Toe: The Keys to Handling Performance

Camber refers to the angle of the wheel against a vertical point. Too much negative camber can lead to uneven tyre wear, (inner side of the tyre) whilst positive camber reduces grip. Toe, on the other hand, refers to the angle of the front wheels pointing towards the centre of the vehicle. Both camber and toe are crucial for optimal handling and tyre wear. With Polybush resisting alignment changing forces, cornering and braking, you will maintain those angles. So you’ll experience consistent camber and toe settings, meaning maximum grip and minimal tyre wear.

 

 

Compression Set: A Rubber Bush’s Achilles’ Heel, Deterioration Over Time.

Compression set happens when a material is strained beyond its elastic limit, to its plastic limit, leading to permanent deformation. Rubber bushes, have shorter chemical chains, and are prone to compression set, resulting in sagging, ovalisation, and reduced resistance to movement over time. This introduces play into your suspension which permanently deteriorates handling and reduces steering responsiveness.

In comparison, Polybush’s long-chain polyurethane composition resists compression set, providing consistent support and performance throughout your Fiesta’s lifespan.

 

Why Polybush is Your Mk6’s Best Friend: The Bag Analogy

Imagine the Rubber bushes on your Fiesta’s suspension system as plastic shopping bags. When you pull the bag lightly, it springs back – that’s elasticity. But when you pull it forcefully, it stretches beyond repair – that’s plasticity. Rubber bushes behave similarly, succumbing to this sort of deformation over time.
However, Polybush, manufactured from resilient Polyurethane, maintains shape and structure, ensuring consistent performance and controlled movement over a long time.

 

The Downfall of Rubber: Degrading with Oil, Fuel and More

Aside from their excess flex and submission to compression set, rubber bushes have ANOTHER fatal flaw; they degrade and break down when exposed to oil, fuel, and other vehicular contaminants. This degradation accelerates wear and tear, hugely compromising driving dynamics and requiring frequent replacement. Polybush’s immunity to oil and fuel means your Mk6’s suspension remains unaffected, ensuring longevity and reliable performance under chemical attack.

 

Longevity: The key feature of Polyurethane Suspension Bushings

Polybush’s durability is unmatched. Unlike rubber, which degrades over time, Polyurethane maintains its structural integrity, resilience, and performance throughout its lifespan.
With Polybush, you’ll enjoy years of enhanced driving dynamics, reduced maintenance, and peace of mind knowing your Fiesta is equipped for the road ahead.

Debunking Misconceptions About Polyurethane:

Despite its numerous benefits, Polybush has often been subject to misconceptions within the car community. One common one is that all Polyurethane Bushes are Polybush.
Anyone can make Polyurethane bushes, but only WE can make Polybushes.

Another myth to be busted is that “Polybushes” always give a harsher ride compared to rubber ones. Although in some cases this can be correct, generally Polybush products are designed to strike the balance between comfort and performance, as Polybushes are Made In The UK and can be made in any hardness we like, from rubber-band soft to golf ball hard. So you can have improved handling without compromising ride quality – Unless you specifically ask for a Race bush.

Another misconception is that Polybush is difficult to install or requires special tools. On the contrary, Polybush is designed for straightforward installation. Many of our installs take less than two minutes, making it accessible to enthusiasts of all skill levels. With simple hand tools and a bit of patience, you can upgrade your Fiesta Mk6 with Polybush in no time, unlocking its full potential on the road or track – See the Polybush Youtube videos for proof!

The Versatility of Polybush Across Various Applications:

One of the most compelling characteristics of Polybush is its versatility across a multitude of applications.

We’re not JUST about performance, our products can also be used to address various MOT failures commonly encountered by enthusiasts. From worn-out exhaust bushes to deteriorated engine & diff mounts, Polybush provides reliable solutions to ensure your vehicle passes its MOT with flying colours, allowing you to focus on enjoying the thrill of driving without unnecessary worries or setbacks.

Whether you’re driving a Ford KA or a mile-munching Mondeo Mk4, Polybush offers tailored solutions to address specific suspension needs. Our best-selling part is the rear beam bush for the Fiesta Mk7, demonstrating the versatility and effectiveness of Polybush in real-world applications.

Polybush isn’t just limited to car suspension components; Our products are on most buses, they’re on diggers & tractors, quarrying and rock crushing machines, concrete beam manufacturers, industrial rollers for steel mills, recycling and paper mills, we make parts for road sweeper scrapers, quarry equipment, machinery wheels, the list goes on and on.

 

In conclusion, Polybush isn’t just an upgrade for your Mk6; it’s a revolution. With its resilience, performance benefits, and longevity, Polybush raises your driving experience to new heights. Say goodbye to sagging, knocking, and compromised handling – and say hello to precision, stability, and confidence on every journey. Upgrade your Fiesta with Polybush today and unlock its full potential on the road or track.

When it comes to classic British sports cars, few capture the essence of motoring history quite like the MGB GT.

With its sleek lines, spirited performance, and timeless design, the MGB GT holds a special place in the hearts of enthusiasts worldwide. In this blog, we’ll explore how you can retain and enhance the vintage charm of your MGB GT while also improving its performance and longevity.

Preserving the Vintage Charm:

The MGB GT exudes a unique blend of nostalgia and driving pleasure that enthusiasts cherish. Whether you’re restoring a beloved family heirloom or embarking on a new adventure with a recently acquired MGB GT, preserving its vintage charm is paramount. From maintaining original features to sourcing period-correct accessories, there are countless ways to keep your MGB GT true to its heritage while still making it your own.

One fantastic resource for MGB GT owners is the “Classic MGB” YouTube Channel, where the channel aims to produce interesting videos on all aspects of buying, owning, running and above all, having fun in a classic MGB!

This video, however, shows an interview with one of our design team Greg, who explains why Polybush is a great option for your MG.

 

Enhancing Performance with Polybush:

While retaining the vintage charm of your MGB GT is essential, improving its performance can take your driving experience to new levels. One upgrade that gives you the option between performance and comfort is Polybush suspension bushes. Our specially engineered polyurethane bushes offer several benefits for MGB GT owners.

Polybush bushes boast exceptional longevity, outlasting traditional rubber alterntives and providing reliable performance for years to come. With their superior durability and resistance to wear and tear, Polybush bushes are the ideal choice for classic enthusiasts seeking long-term reliability.

For MG owners who store their cars away for winter, having suspension bushes that resist compression set (Like Polybush) is particularly beneficial for maintaining the car’s performance and longevity. During the winter months, classic cars like the MG BGT are often subjected to cold temperatures, moisture, and prolonged periods of inactivity, which can exacerbate the effects of compression set in rubber components. Rubber suspension bushes, when exposed to these conditions, are more prone to permanent deformation and loss of resilience, leading to degraded handling and increased wear over time.
This can result in a bad alignment, with knocks and bangs when driving when the car is finally brought out of storage for the spring.

On the other hand, polyurethane suspension bushes, such as those offered by Polybush, are resistant to compression set and better equipped to withstand the rigors of winter storage. Their superior durability ensures that they maintain their shape and performance characteristics even after prolonged periods of inactivity and exposure to cold temperatures. By upgrading to polyurethane bushes, MG owners can rest assured that their car’s suspension system will remain reliable and responsive, whether it’s tucked away in the garage for the winter or out on the road enjoying the warmer months.

Moreover, Polybush bushes retain the comfort of the original suspension system while offering enhanced performance characteristics. By reducing unwanted flex and movemen and resisting deflection, your alignment is kept, meaning Polybushes provide a more precise and responsive driving feel, allowing you to enjoy spirited driving with confidence.

Whether you’re tackling winding country roads or cruising along the coast, Polybush bushes ensure that your MGB GT delivers optimal handling and stability without compromising on comfort. With Polybush, you can experience the best of both worlds: vintage charm and modern performance. As noted by our friends over at Wheeler Dealers

Where to Find Polybush and More:

Ready to upgrade your MGB GT with Polybush suspension bushes? You can purchase directly from Polybush or through trusted suppliers like Rimmer Bros, ensuring that you get top-quality parts for your classic car restoration project.

Buy Them Direct – HERE
Buy Them From Rimmers – HERE

Preserving the vintage charm of your MGB GT is a rewarding journey that allows you to connect with automotive history while enjoying the thrill of classic motoring. With the right resources, such as informative videos and high-quality upgrades like Polybush suspension bushes, you can enhance both the aesthetics and performance of your MGB GT for years of driving enjoyment.

So, roll up your sleeves, fire up the engine, and embark on a restoration adventure that celebrates the timeless appeal of the MGB GT.