Q: What is Bead Knurling?
Bead knurling is a process used in the manufacturing of tire rims or wheel rims. It refers to the creation of textured or patterned grooves (knurls) along the bead seat area of the rim, where the tire’s bead (the inner edge of the tire) sits.
The purpose of bead knurling is to improve the grip between the tire and the rim, ensuring that the tire remains securely seated on the rim, especially under high pressure or during aggressive driving. This knurling creates small ridges or bumps that increase friction, which helps prevent the tire from slipping or coming off the rim in extreme conditions, such as during high-speed turns, braking, or sudden impacts.
Bead knurling is commonly found in high-performance and racing tires, where tire security and reliability are crucial. It can also be used for certain off-road vehicles or trucks, where the tires endure heavier loads and more rigorous conditions.
In short, bead knurling enhances the performance and safety of tires by ensuring they stay properly attached to the rim, even in demanding situations.
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INSTALLATION guide
For the do it yourselfer or trained mechanic, our in-depth installation guides provide step by step detailed instructions on fitting your Tesla with Unplugged Performance Parts.
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WHAT OUR CUSTOMERS SAY
RATED 4.95
(282 REVIEWS)
LEAVE A REVIEW
With real reviews from real customers, shop UP products for your Tesla Model S, 3, X, Y and Cybertruck with confidence. Leave reviews and earn up to 2000 UP Rewards points each, redeemable towards exclusive UP Products.
Amazing style and quality!
Christian N.
November 28, 2025
Amazing product that looks great and helps with efficiency! The quality is amazing.
Christian N.
November 27, 2025
Extremely well built and engineered. Best on the market.
Cordell
November 24, 2025
The "Road Warrior" Curb Guards work as advertised for the most part. I did not find them to be as "protective" as advertised in all the Youtube and promotional videos. Just a day after I installed my Road Warrior wheels, I hit a curb while turning at a slight angle. This damaged the curb guard as...
Dean C.
November 22, 2025
Im impressed at the High quality. Love the subtle and clean look.
Adam M.
November 21, 2025
UP 9-Inch Logo Decal
RATED 5.0
Love the simple look to this decal
edgar M.
November 21, 2025
Pretty awful. Package’s held for weeks for incorrect shipping details 700 dollars in import tax and broken products arriving …… very disappointed. Oh and never a timely response or method to contact other than email…..
Brad
November 21, 2025
Had UP install the HD front bumper with the 11" LEDs. Robust steel construction, makes the truck look more aggressive but lines remain clean. This bumper is what Tesla should have equipped the truck with out of the factory! LEDs are super bright as well. Simply the best looking, best designed,...
Megatron
November 19, 2025
Tesla Cybertruck Heavy Duty Rear Bumper with Hardcore Trailer Hitch Receiver - UP INVINCIBLE®
RATED 5.0
Had UP install the HD rear bumper with hardcore trailer hitch receiver including flood lights. Utility is awesome, the arms are robustly built and carry my full-size spare, a 20" beadlock wheel with Wildpeak AT4Ws with ease. No rattling whatsoever, the tire is locked in. Swing arms themselves can...
Megatron
November 19, 2025
Went with the burnt titanium, simply looks gorgeous with the finish!
Megatron
November 19, 2025
Went with the burnt titanium, simply looks gorgeous with the finish.
Megatron
November 19, 2025
Robust carbon steel construction. Lines look very clean with the HD front and rear bumper installed. Have not seen a cleaner looking aftermarket rock slider for the CT, love mine!
Megatron
November 19, 2025
I had another set carbon steel running boards on my Cybertruck for a while and finally got to see the UP Invincible HD Rock Sliders while out at XTakeover this summer. They looked so good and were noticeably more sturdy than what I had on the truck. I replaced mine with a set of these HD Rock...
Josh H.
November 17, 2025
While the overall weight reduction isn't much in totality, it is noticeably lighter compared to the original lug nuts.
Josh H.
November 17, 2025
I had an issue of the camber being no longer able to be adjusted to specs. The friends of UP took care of me. Easy to swap as well. Went to a shop yo align it and car is up to specs again and straight as an arrow. Love it! Thank you UP!
Kamil K.
November 16, 2025
Overall, I'm very happy with the UP Forged Road Warrior 19" Wheels that I got for my new Model Y Juniper. They look great and seem very sturdy. The service and communication from Unplugged was great especially with my salesman, Shahar. It took about 3 months for me to get my wheels but it was worth...
Dean C.
November 12, 2025
Really nice jacket. A must have for a UP enthusiast!
Montage Ø.
November 12, 2025
Unplugged Performance installed front/rear sway bars on my Model 3 Performance Highland. The change was instant: less body roll, flatter cornering, better grip, and precise control. It sharped handling without hurting ride comfort. This is a great value and would highly recommended.
Alex H.
November 12, 2025
I received the lower compliance Aft arms today (fri), after ordering on mon. I wasn't sure I'd have time to install, since I already had a lot on my plate, but this afternoon I had a couple spare hours, it ended up only taking about 45 min, including getting the Tesla on jack stands. my...
Rob T.
November 09, 2025
Tesla Model Y Alcantara Headliner Kit
RATED 5.0
Finally!!!! Been waiting on UP to both have a decent Black Friday sale and to have this item on it and whatdoyaknow…..HALF OFF! I wish it was all gray everywhere, but I’ll do the touch up myself and get it 100% how I need it!!!
Montage Ø.
November 07, 2025
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Unplugged Performance is the world leader in premium performance upgrades for Tesla vehicles. With our USA-made line of stylish and high-performance parts, our sole focus is on holistic development and improvement of all Tesla cars.
Unplugged Performance was founded and incubated by the team behind the world-renowned automotive customizer Bulletproof Automotive. Unplugged Performance is the world's leading company focused on the customization and sports performance of Tesla Motors vehicles.
All of our parts are researched and engineered on our own development vehicles with the intention of improving every aspect of the driving and ownership experience. Unplugged produces an exclusive range of premium upgrades to give a new sporty performance identity to Tesla Model S, Model X, Model 3, Model Y, and the Cybertruck.
Improving on perfection is no easy task, and to do so Unplugged products are professionally designed, prototyped, and manufactured in-house in Hawthorne, CA, and in collaboration with the best motorsports suppliers. The supercar performance of Tesla vehicles meets supercar-grade enhancements with Unplugged Performance.
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