RIVIAN WHEELS DECA/HD 20 INCH

NOTE: No discounts on these listed prices. If you order with a dealer discount or discount code, we will refund your order so you can re-order properly.

1/30/24 - If your color choice is noted "OUT OF STOCK", we do have the raw machined wheels in stock, so once you order the machined wheels go to powdercoating, and will be shipped about a 10-14 days after that.

DETAILS:

• Fits 2022-2024 RIVIAN R1T and R1S
• FREE SHIPPING IN THE 48 STATES!
• Listed price is per single wheel.
• Forged and manufactured 100% in the USA.
• Exceptionally low Runout specs. More on this important feature below.
• 20" x 8" x +50mm offset
• Tucked in profile, helping with tire clearance and aero.
• Hub Centric design. 2.525" inside bore diameter.
• 43.5lb** per wheel by design, for improved impact strength.
• FEA analysis 3200lb weight rating.
• HD = Ready to handle anything.
• Special Tire Bead retention lip to keep tire on with even very low pressure.
• Valve-Stem impact/Rock protection built into the design.
• Uses factory OEM Lug Nuts.
• Aluminum machined Center Caps included.
• Suggested TMPS sensors to use*** CLICK HERE
• If you want to DIY program the above sensors CLICK HERE
• To update the tool for Rivian to show up if needed  CLICK HERE

     This has been a long road getting these wheels finished, and we are so happy with the outcome! Below we go into more detail regarding special features we have designed, and the quality standard we are going after.

Forged Aluminum vs. Cast Aluminum: Most understand that Forged Aluminum is stronger than Cast, but why? Basically, Forged Aluminum is squashed into it's shape, packing the molecules of the metal tighter together when compared to molten poured/Cast Aluminum.

What this does is create a more uniform material that is much more durable. This means that Forged Aluminum while being a bit more rigid can still bend and flex a bit before failure, where Cast Aluminum will generally crack and fail instantly, instead of bending and absorbing an impact.

Vehicle and Wheel Weight:  In order to make our wheels virtually indestructible, when comparing to the stock wheels, FEA analysis lead us to add a few pounds of weight. The main reason for this is that the Rivian is essentially the weight of a heavy Diesel 1 Ton truck. The wheel bead area bends on the Ram 2500/3500 trucks all the time when off road, and if the wheels are not strong enough, the Rivian will be no different.

Highest Level Runout Specs: Wheel Runout is the definition of how true the wheel spins around the center hub. You might assume that most automotive wheels would not have substantial Runout, but surprisingly many wheel manufactures, even OEM, actually allow 1.5mm/.060" runout.

Our Rivians have very sensitive tight steering, which makes it so any imperfections in the roundness of the wheel and tire assembly can be felt, and seen, as shaking in the steering wheel. Before final machining of the center bore and lug pattern in or wheels, we digitally measure each wheel, and our average spec for Runout is right at .25mm/.010". If the Runout measures near .5mm/.020", we adjust it to be better before machining.

This means that every wheel we machine has Runout no more than the stacked thickness of about 3-4 sheets of paper. Quite often we see a wheel come in at about .1mm/.003" before machining the final step! We have had many reports now that customers have noticed their steering wheel be more rock-solid, and steady, after our wheels went on the vehicle. Another point of note is that as of 2021 data, even Porsche allows up to .7mm/.028" Runout.

Hub Centric: With 800+ HP, a 7400 pound weight, and only 5 lug nuts, it's virtually mandatory any wheel that goes on the Rivian be Hub-Centric. If you don't know what Hub-Centric is, here are a few point that make Hub-Centric so important on certain vehicles. The most important detail, in our opinion, is that a Hub-Centric wheel removes any Shear-Forces from impacts off of the lug studs.

This means that the only loads the studs see are fastening clamping forces, or rotational Shear Forces from braking/accelerating. The weight of the vehicle, how hard you drive Off-Road, big pot holes, etc, are a non-issue as the center hub is taking the impact forces, vs the lug studs. Much safer!

When lug nuts come loose on Lug-Centric wheels, it's generally going to be from hard impacts allowing the wheel face to slightly shift a tiny amount on the hub, and that tiny amount can grow quickly into a loose wheel as the wheels spin down the road. Hub-Centric also makes the wheel run more true down the road if there are issues with machining or lug-stud or lug-nut symmetry, with the hub forcing the wheel dead-center and true.

125ft/lbs Lug Nut Fastening Torque: Rivian's spec for lug nut torque is 140ft/lbs. We feel this is a bit too high, and we suggest 125ft/lbs with our wheels, though you can stick with 140ft/lbs if you like. Let us explain our thinking. One point of note is a recent recall done by Ram Trucks regarding lug torque on the Ram 3500 to 5500 trucks.

The recall was to assess and correct improper lug nut torque, as they did not adjust the manuals spec when changing to the new Metric 14mm studs, and our Rivians use the same 14mm thread size. Ram's old spec was 140ft/lbs, and at 140ft/lbs there was a risk the 14mm stud could stretch or snap. The fix was to replace the stud if stretched, and adjust to the new spec of 130ft/lbs.

Even at 130ft/lbs it's pushing the limit a bit if the threads are greased or if anti-seize is used, so 125ft/lbs is a great spec to cover all bases. Plus we only have 5 lug nuts, not 8, so stretching one stud could be a very bad outcome. Another point of note is that we have replaced at least 10 sets of wheels in house on brand new Rivians, and most of these came in the door with lug nuts set at only about 80ft/lbs to remove. 80ft/lbs is TOO loose.

Wheel Weight, Range, and Efficiency: In the future we may make a lighter weight version wheel, for people mostly concerned with range or racing around a paved track, but really, 5lbs off of a wheel on a 7000 pound vehicle is not going to change a lot in the range department. For the best range, a light weight tire with a smooth, low rolling resistance tread, is the biggest player.

Reducing the weight far out near the tread of the tire, is what will give you the biggest effect in rotating mass reduction effect. After a year of driving around on these wheels, with MUCH heavier tires, the negative range impact is almost nothing. Also remember that unlike ICE vehicles, we get that awesome Re-Gen when coming to a stop or driving down hill!

Wheel Width: Another detail we incorporated is to make the wheel a 1/2" more narrow than OEM. We did this so that when Off Road especially, the extra tire sidewall bulge makes the wheel outer surface more sucked in so it's protected better, which helps protect the wheel from rock rash, or curb-rash. Also, most tires in the size we'll be running on the Rivian prefer an 8" wide wheel.

Wheel Impact Durability: For more resistance to Off-Road abuse, the wheel lips that normally get damaged or bent, are extra thick. Being Forged Aluminum also makes them more resistant to failure, if under some crazy circumstance you did manage to bend one.

Valve Stem Protection: We incorporated a sunk pocket that the valve stem is down in, so that rocks or anything bouncing around won't break the valve stem and leave you stranded in the middle of nowhere.

Tire Fitment - We've done extensive testing in the last few months, and here is what we have found in regards to tire fitment. Keep in mind our wheels are a little more narrow, and have a tiny bit more positive offset, so this information will not cross over to the OEM wheels. The OEM 275/65R20 fits perfect in every scenario with our wheels.

The big difference is that many tires of the same size truly measure quite a bit different in width. All tires seem to have the same 34" diameter, but the tread width can vary a ton.

For this reason, we feel the 295/60R20 tire is the perfect tire to use with our wheels, because of the wider contact patch which looks and handles awesome on road and off, but the 34" diameter is retained making it so there is zero rub. 295/65R20 tires have been tested, but with the 35" diameter, in Sport-Lowest and driving aggressive, the tire can touch the plastic a bit in the front. Our test truck will probably live with this size, but we don't suggest it unless you are OK with a little rub at times.

Wheel Offset - With the Rivian able to auto-squat itself down super low, if the wheel offset pushes the wheels outward any more than factory, you are going to possibly risk rubbing the tires on the fenders when in Lowest Mode.

We actually pulled the wheels in a couple millimeters, which lets even wider more aggressive tread width tires fit with ease in every height scenario, on road or off. Also, keeping the wheels tucked in like this, is more Aerodynamic.

Tire retention - Method wheels, and some other Run-Flat wheel manufacturers, have implemented designs to help keep the tire on the wheel even when down to very low air pressures. In most cases, a heavy vehicle plus low air pressure, is a perfect combo to have you stranded off road. We designed a tire bead lip that is not as aggressive as the Method Bead-Grip, but does give a similar effect to a Run-Flat wheel.

With 34" tires and 20" wheels we don't have the air-volume to go into single digits pressure wise, but if you are running an E-rated tire having strong sidewalls, you can go very low with our wheels. Medium speed sharp rocky terrain 25-30psi is great. Slow speed rock crawling 20-25psi works awesome. Medium speed smoother terrain like snow or sand, 15-20psi is super effective to help from getting stuck.

Color Choice info - The Gloss Grey Metallic is a slightly lighter version of Rivian El Cap Granite. In the sun the metallic glimmer is strong. This color will compliment almost any vehicle color well.

Our Black is called "Light Black", as it looks odd when Black wheels are a deeper darker Black when compared to the tires. This color is more of a very very Dark Grey with a little bit of Fine Metallic shimmer to it in the sun. We call it a Semi-Gloss because of the Shimmer, but it really has no Gloss it's more matte. Similar texture to Matte PPF.

The Dark Bronze is very dark in the shade, but wakes up to a very shimmery, almost Root Beer like color, in the sun.

The Custom Color option lets you run wild with Prismatic Powders range of colors. Choose a color code here COLOR OPTIONS and lets us know that in the order notes.

** Note on wheel weight variance. Machining these wheels is a 2 part process, which can regularly remove or leave more material behind on the end product. We also suspect there is variance in material density when the forgings are received from our manufacturer.

Claimed weight is an average of weights we have calculated and measured. The claimed weight is uncoated wheels, and Powercoating will add weight and sometimes powdercoating is two layers, so keep this in mind if you decide to weight your wheels after receiving them. Thank you!

*** Note on the linked TPMS sensors. These sensors come out of the box un-programmed, so they will need to be programmed before the Rivian can detect them. This can be done before or after they are installed. To program after they are installed, the programmer unit must be the wireless type, like the unit linked in the notes above.

The programmer is set close to the sensor outside the tire, and through the tire sidewall the programmer will wirelessly adjust the sensor programming to the Rivian specs. Once done, after a few miles of driving, the Rivian will detect the sensor pressure, and position on the vehicle.

Email Don at dthuren@aol.com if you have any other questions thank you!