SUPPORTME@N2ITIVE.ME  or (626) 344-8389

Tire Wear & Shudder Issues

From the factory, Tesla Model S and Model X cars come with two major design flaws that cause a front end shudder or vibration and shortened rear tire life.


The first design flaw is noticed under hard acceleration and presents itself as a shudder, vibration or sometimes extreme shaking coming from the front of the vehicle. This shudder occurs because of internal damage to the front half-shafts. The damage happens because the angle of the front half-shafts or drive axles between the motor and the wheels is too steep and causes extreme tension and binding within the half-shaft. This binding will damage and deform portions of your half-shafts’ internals and leave you with what’s been commonly referred to as acceleration shudder. The only solution from Tesla’s Service Centers is to put the car’s suspension in “Low”.  However, this then exacerbates the second design flaw where the rear wheels tilt too far inwards.


The Tesla Model S and X are already known to wear out the rear tires on the inside edge due to excessive negative camber, or wheels tilting inwards from the top. Lowering the suspension setting makes the wheels tilt in even further! This causes more the weight of the car to rest on the inner shoulder of the wheel.  Driving this way quickly wears down the inside edge of the rear tires which can cause a sudden and unexpected dangerous blowout.


These two problems are by far the most talked about issues in the online Tesla groups.  Fortunately, these design flaws are correctable with N2ITIVE’s adjustable suspension components.  Our Alignment Kit 1 can automatically set the car to a lower height to reduce premature half-shaft/CV joint wear and accompanying acceleration shudder.   This allows the rear wheels to be properly aligned to eliminate the common inner tire wear problem.  All while staying within Tesla’s alignment specifications.  This is important for the proper functioning of the vehicle and for your safety.

Our patent pending adjustable suspension components are known to be the strongest and best engineered on the market by far, even more so than Tesla’s own factory parts!  All our products come with an unmatched 6-year or lifetime warranty.

Tesla Model S/X Acceleration Shudder Vibration
Diagram showing Tesla half-shaft binding at CV joints due to steep angle.

Reduced angle makes the half-shafts less prone to binding.

Tesla Model X half-shaft CV joint damaged with internal spalling causing acceleration shudder and vibration.

As the ball runs back and forth over the damaged section of the half-shaft it causes vibration.

Inner tire wear on the Tesla Model X and S can cause dangerous blowouts!

How It Works

In 2014, Tesla added another motor to the front of the Tesla Model S to make it an all-wheel drive car.  This was a great idea, but they used the original Model S platform, which was designed as a rear-wheel drive vehicle.  Tesla decided not to redesign the platform but to use the same chassis and work within the constraints of that design. This essentially meant mounting the new front motor/gearbox higher up than would be ideal for the longevity of the half-shafts (drive-axles).  Mounting the motor so high up increases the downward angle of the half-shafts and therefore increases the stress and binding forces within them. The weight of the vehicle coupled with high torque motors with the excessive angle of the half-shafts can quickly deform the insides of the half-shafts and then you have vibration. This issue is even more common on the X because it sits higher up and therefore puts the half-shafts at a greater angle making it more prone to damage.

N2ITIVE offers two suspension kits to address these issues.  The first kit is our Alignment Kit 1 which is also know as the acceleration shudder and inner tire wear kit. It includes all the suspension parts necessary to automatically slightly lower the vehicle and keep the wheels in proper alignment to ease the excess binding inside the half-shafts and completely eliminate inner rear tire wear. Our second kit, Alignment Kit 2 is designed strictly to eliminate inner rear tire wear and make it possible to dial in the perfect alignment at your preferred height setting all while staying within Tesla’s alignment specs.  The difference between Alignment Kit 1 and 2 is that there are no lowering links provided with Alignment Kit 2.

Will installing your parts void my warranty?  US and Canadian citizens are protected by the Moss-Magnuson Warranty Act and the Consumer Protection Acts which makes it illegal for an automobile manufacturer to void your warranty while using aftermarket parts unless they can prove that some damage to your vehicle was directly caused by using the aftermarket parts.  The UK and other countries have similar consumer protections but you’ll need to check in your area to confirm.  Please check the FAQ section for more details on that question.

So which kit should you get?  If you drive a Model X then we definitely recommend our Alignment Kit 1.  The Model X is the most prone to internal half-shaft damage so this would be the kit to get.  If your Tesla is an all-wheel drive Model S performance then we also recommend the Alignment Kit 1 since the performance versions have greatly increased torque.  For the Model S non-performance versions you can go with either kit.  If you’re heavy on the accelerator then go for the Alignment Kit 1.  For the rear wheel drive versions and non-air suspension versions of the Model S then we recommend the Alignment Kit 2.  Still have questions?  We understand and are always available to help!  Just send us a message.

N2itive’s Acceleration Kit 1 Installed

Really Great Video Explains The Problems In Simple Terms

Chris Lee – Arizona
“These parts are incredible. Much more substantial than the OEM parts and stunning! 😍 The guys at the shop are gawking over them.”
EVfixMe Uses Only N2itive Control Arms Because Of Superior Quality
EVfixMe, Tesla Mechanics – Costa Mesa, CA
“We use only N2itive control arms for our customer’s cars… all I can say is their quality is Superior.”
Voodoo Autosports Orange County Testimonial
Eric Cheney (Master Mechanic) – Santa Ana, CA
“From all the arms I’ve installed over the years, you’ve made a solid part!”
Stephen King's Tesla Tires Wear Out.

Stephen King Doesn’t Accept The Inner Tire Wear Issues Either (Hint: It has nothing to do with performance tires…)

Thermal Image of Tesla Tire That's White Hot on the Inside Edge from improper alignment

Thermal Camera Showing Inner Edge of Tire Taking More Of The Load

Safety In Strength

Aside from little to no adjustability, some of the original Tesla X and S suspension components were not the most robust design.  For example, some owners have had issues where the camber arms will bend or break going over potholes or bumps in the road.  You can imagine how dangerous it is to have such an important suspension component suffer a catastrophic failure!

N2ITIVE’s camber and toe arms are significantly stronger as you can see in this FEA analysis.  N2ITIVE was the first company to mass produce adjustable rear camber and toe arms for the Tesla Model S/X.   We are also the only company to produce these control arms with the threaded rod on-axis with the bushings.

This is critical.  In our FEA testing this results in a control arm that is over 40% stronger than off-axis designs, like our competitors use.   Our rod ends are dropped forged from a single piece of 4140 Ultrahigh-Strength Chromoly steel, not two pieces welded together.  Our design is much stronger than Tesla’s factory control arms and significantly stronger than the competition.

Furthermore, our threaded rod is located at the bushing end and not in the center of the control arm, as with other companies, where it is more prone to bending or even breaking.  Even under far greater weight and stress N2ITIVE’s control arms will not fail.   This is so important when you’re dealing with the heaviest consumer vehicles in the world!  Do not settle for less.

Original Tesla S Broken Rear Upper Camber/Control Arm

Above: Original Tesla Non-Adjustable Camber Arm

In this analysis Tesla’s original camber arms suffer about 3x more deflection and major deformation under substantially less stress compared to the N2itive’s adjustable SX-1 camber arms below.

N2itive Adjustable Camber Arms Maintain Integrity Under Even Greater Stress

Above: N2itive SX-1 Adjustable Camber Arm






We strive to make only the highest quality Tesla aftermarket parts for your Tesla.  All our parts are made in ISO 9001 and TS16949 Certified Factories.  All parts come with a 6-year warranty.