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At JF Automotive, we modify electric vehicles for better performance, looks, and handling. As a Tesla specialists in the UK, we worked on our fleet 2025 Tesla Model 3 Highland. This updated Model 3 has new styling, better aerodynamics, and improved interiors. Stock versions sit high, so we fitted Unplugged Performance lowering springs and wheel spacers for a lower stance and wider track. This case study covers the modifications, installation, and results. It suits Tesla owners looking for similar changes that keep efficiency and do not affect warranty.
We used two main parts: lowering springs and wheel spacers, from Unplugged Performance and H&R.
Lowering Springs: We picked Unplugged Performance moderate height springs for a practical drop. They offer mild (about 0.5-1 inch drop), moderate (around 1-1.5 inches), and sport (up to 2 inches). For our Model 3 Highland, moderate springs lower the centre of gravity without losing ground clearance on UK roads with potholes. These springs suit Teslas, with rates that firm up under load for better cornering and ride. Made from strong steel with anti-rust coating, they fit the Model 3’s suspension.
Spacers: We added spacers to all wheels. These 15-20mm thick aluminium pieces widen the track by moving wheels out. This fills wheel arches for a wider look and adds stability in turns. We used hub-centric spacers for smooth fit without shakes. This helps the Model 3 Highland, as stock setup can understeer, wider track gives more grip.
Parts allow easy fitting without permanent changes.
Fitting needs care and skill, done in our workshop. It took 4-6 hours, with alignment, and should not affect Tesla warranty if done right. (Please speak to local dealer)
We lifted the car and removed wheels. Stock springs were removed with compressors. We fitted Unplugged Performance moderate springs, checking mounts.
Spacers went between hubs and wheels, tightened to spec with a torque wrench. Wheels back on, we did full alignment with laser tools for camber, toe, and caster. This stops uneven tyre wear after lowering.
We checked brakes and sensors for Autopilot calibration.
Changes improved our fleet Tesla Model 3 Highland in handling and looks. Key points:
Coming soon…
Motorsport-exclusive components are explicitly designed for track use. While they can be installed on any vehicle, it’s important to note that using such parts renders the vehicle unsuitable for road use and may result in MOT failure.
No! Our remaps are designed specifically to improve the performance of your vehicle whilst remaining within the tolerances of your vehicles’ components.
Sadly, in attempt to achieve ‘big numbers’ some other companies over tune engines, placing excessive stress on the engine, transmission, cooling systems, etc, leading to reduced life span and reliability of the vehicle. We pride ourselves in producing reliable remaps which do not over stress your vehicle but still produce impressive results.
In any case where a customer is dissatisfied with any ecu remap software supplied, within thirty days of the supply date, the customer can request their money back. In order for any refund to be processed, the customer must present their vehicle to our workshop and allow our technicians to restore the vehicle to its original state. On successful completion JF Automotive will refund the cost of the remap to the customer.
No refund can be granted unless the vehicle is returned to the original state by JF Automotive. The 30-day money back guarantee only applies to stage 1 remaps and does not apply to other services like pops and bangs, parts or dyno sessions.
If another modification is purchased alongside a tuning file, which relies on a remap to operate, only the cost of the file is covered by this guarantee. We reserve the right to withdraw this 30 day money back guarantee.
Absolutely. We offer this service free of charge if the vehicle is brought back to us. We’ll be very surprised if that’s what you want after taking one of our remap products, however in the case of lease cars some customers prefer to put the car back to standard before returning the car. You might want it back to standard if you are visiting a dealer for warranty or service work, again we will do this for free. Should you lose your tuning files due to dealer actions or parts failure we will be happy to re-install the map onto your car free of charge where possible.
No problem, simply bring the vehicle back in and we will take a fresh read of your ECU and write you a new map file free of charge. We offer this as part of our lifetime software support.
Whilst the remap is undetectable to dealer equipment, you should notify your insurance company of any modification to your vehicle. Many insurance companies do not penalise you for upgrades of this nature, particularly if you’re tuning for increased economy however a failure to disclose modifications may invalidate your policy. You may wish to enquire with your insurer if the modification will affect your policy prior to choosing one of our services.
We get asked, “Why do some tuners charge as little as £150?” There are a few factors as to why we do not offer remapping for £100-£200!
We supply custom written files for each vehicle that we remap that take in to account condition, milage and customer request of each vehicle. Our services are fully insured with a 30-day money back guarantee and lifetime support for the tuning software supplied. We constantly invest in the most up to date tuning and diagnostic equipment and software and we offer a quality service to all our customers.
Overall our custom supplied tuning software is of the highest standard that we know of, so if you want the best of the best, choose JF Automotive.
Search our ECU tuning options to increase the power and torque of your vehicle and our wide range of performance parts.