Assurance you can trust
RNI has raised the bar in customer to mechanic interaction, communication and relationship. Drop your car off somewhere else and you are left in the dark about how inspection and repair work is completed. Here at RNI Motorsports, we do things differently. we sit down and go over budget, goals, design and brainstorm together to bring you the best looking and performing machine that is available. With our vast knowledge of different setups and having tried nearly every imagineable combination of items available we know what will fit your needs by paying close attention to your goals. We take down the counter that stands in the way at most shops, here your family. we take build pictures on most track builds as time permits.
Next level customer service
We have taken down the service counter between you and your mechanic. We get personal with you and your BMW, and take the time to listen to your needs, wants and concerns. Our aim is to help you understand what is going on with your car and educate you in the process so you fully understand what we are doing and why its the best for you. To make it perfect that means maintaining close contact with you, giving constant feedback on your vehicle and keeping you in the loop.
A labor of love
RNI Motorsports has been in the BMW and high performance vehicle industry for over 20 years and our background is racing cars and building high powered cars. All of our techs drive the same cars you do BMW M3’s its a mandate to work here that you must know these inside and out and really have the passion for the car the same way our clients do. We have the knowledge, experience, patience and tools to get the job done right. Our family here at RNI is passionate about what we do, and we wish to bring out the best in your BMW! Let’s take this ride together.
We service everything from E30’s, E36 M3’s, E46 M3’s, E90 M3’s, E92 M3’s E93 M3’s, E63 M6, E60 M5, F82 M4, F80 M3, F10 M5, E85 1 series , Z3 and Z4’s, E70 X5’s And Dinan builds.
We are experts in identifying and repairing subframe failures in the BMW E46 M3 Chassis which is something that plagues owners, but we have the solution. We weld the cracks and attach thick support plates and weld them in place. We use a body shop grade 3m 4 stage re-sealing process to protect against rust and deterioration of the welded areas. If your not trained properly or don't know what your doing you can easily weaken the area more than strengthen it. I personally have my Technical Degree in Metal Fabrication Welding and Machine operation. We do more reinforcements than any other shop in the US or abroad so look no further we are the BEST.
Engine & Drivetrain
We are expertise diagnosing engine and drivetrain issues commonly mis-diagnosed by run of the mill shops. We have a fix for the common Rod Bearing issues the S54 and S65 face by upgrading to a specially coated and treated aftermarket Rod Bearing with more clearance. We install Camshafts to increase top end horsepower, Valve adjustments, Timing, CSL Intakes, Exhausts, We build custom Differentials to meet your needs and get more torque and traction, Transmission conversions and swap, SMG Repair and Conversion, Engine swaps, engine Rebuilds and more. You name it, we can do it.
We'll breathe new life into your cars handling by replacing vital suspension components. Fresh coilovers and camber plates can really improve the look and function with tons of adjustability for your street/track car, adjustable control arms, tie rods, upgraded sway bars and bushings will have your car riding on rails. We also use oem, poly and or solid mounts in the RTABs, FCABs, engine mounts, transmission mounts, sub frame bushings, differential bushings
Are your Seats looking worn, cracked and faded? We can help. We do re-dyes, repairs and full interior swaps. We can also strip it down if you're looking to save weight for the track. With many options such as alcantara steering wheels, e brake boots, shift boots and headliners your car will be in heaven. We also fix all other worn looking items that you may have thought was impossible.. we have many different options and can completely customize and transform your BMW M3 into the dream car you always wanted. Why settle for second best.
We use Beisan Systems Vanos rebuild kits exclusively and are one of their authorized rebuilders. Even if you aren't experiencing Vanos issues, take preventative measures and let us bulletproof your Vanos system. We use a lifetime buna o ring seals kit to replace your old brittle and cracked seals which lead to loss of power, cold idle drop, and service engine lights. We also do the anti rattle kit which when left alone sounds like a diesel motor. we follow up with a new improved Disc driver that has smaller holes drilled for the Exhaust hub. Leave it to the best and most experienced Vanos rebuilders around.
Let us repair your existing paint and body damage. We have years of experience fighting the insurance companies on your behalf to get you the most money back in your pocket. Call us first and let us do your dirty work and don't fall victim to the games insurance companies try to play with you but cant with us. We have the industry leading experts at work to get your car back to the showroom quality finish it deserves. big or small we can handle it. We also do Carbon fiber roof retrofits as well as sunroof deletes.
Let us help build and strategize for the ultimate horsepower machine by adding a supercharger or turbo to your M. we offer a variety of setups most other shops do not know exist. Proud dealer for Active Autowerkes
Going to fast? Need more stopping power? Let us outfit your M3 with some Big Brakes front and rear or just front. we are a Brembo authorized dealer and cant wait to discuss your options. Bigger pistons and upgraded Brake pads accompanied by stainless steel brake lines will make more difference than you ever expected.
Wheels and tires
We offer wide array of wheels and tires. We are Apex Wheel dealers which is one of the premier cost effective options on the market today. And we are also a Michelin dealer as well so we only use the best when it comes to your car.
We offer custom Tuning for all makes and models of BMW M3’s. We do E85 Conversions, Supercharger customs dyne tunes, Turbo setup Tunes, Stroker Tunes, SMG and DCT tunes. We make the most and the safest power you can buy om the market today. Let us blow you away.
Parts & accessories
We offer A-Z in parts and accessories for your BMW. From Carbon Fiber CSL products to Roll cages and harness to headers, exhaust, intakes, suspensions, wheels, tires and brakes to OEM fresh cars and all out track builds your in luck because it is a one stop shop.
trackside support & on Track instruction
Let us take you out and show you how to really master your M3 with real live training from the best.
Our mission is to make this the most complete, easy and fun transaction you have ever hoped to have. by combining our passion, experience and comprehensive knowledge about the sector on the BMW market we can easily offer the best result possible as we can make your goals and aspirations an easily attainable reality. Nothing is beyond reach.
Warranty & Maintenance
We also offer a discounted maintenance plan for life if you purchase your M3 from us, just ask how we can save you money.. We will stop at nothing until we are sure you are happy and satisfied with the results we provide you. We stand behind our work with a Ironclad satisfaction guarantee. See why we are rated number 1 in the nation. We are the industry standard and trend setters for this sector.
Military and Police
We support our military and police men and women who lay their lives down for us with no thought each and every day. Ask about our discount program we have designed to give back to ones who deserve it most. We sponsor our local police dept and built M3 track cars for them and sponsor HPDE events to further their skills behind the wheels.
Hours and Location
Monday - Sunday
8am - 8pm
1650 Redi Rd ste #100, Cumming, Georgia 30040
We love to show customers what we do, so come by and check us out!