If you Google “steering wheel spinner,” you’ll find a plethora of websites claiming that steering wheel spinners are illegal. Part of the problem is that spinners are also known as suicide knobs, prompting many to assume they are unsafe and illegal. They’re not, but the name and the myth persist. The name “suicide knob” is the result of poor driving practices used by truckers before the advent of power steering.

Back in the day, truckers had the habit of turning their rigs one-handed using a spinner and then letting go of it when their turn was completed (but before they had a grip on the wheel with their other hand). This resulted in the wheel snapping back hard, often hitting the driver’s hand with enough force to cause serious injury. It also created a dangerous situation if the driver didn’t regain control.

Since the invention of power steering, that sequence of events has dramatically decreased. A car will still try to self-correct to a certain degree when you take your hand off the wheel or the spinner — but without the fast and dangerous recoil of yesteryear.

Contrary to popular opinion, steering wheel spinners are legal in all 50 states. Most states don’t even mention spinners in their vehicle codes. In the few states that do, such as Oregon, the mention is limited to mandating that construction equipment have power steering if a steering wheel spinner is to be used.

The thickness of your steering wheel’s outer ring must be measured so you know which spinners will work for your car. Most wheels have a diameter about an inch thick, but some cars have “skinny” wheels. The clasp on some spinners won’t be able to grip skinny wheels tightly unless you wrap a layer of foam rubber or some other material around the wheel to increase the thickness. If the spinner isn’t held tightly in place, it will slip during use. That’s worse than not having one at all. Note: if you have a steering wheel cover on your wheel, choose a wheel spinner that can accommodate any added thickness of the cover.

You’ll have to determine where on the wheel to put the spinner. It should be located where it won’t interfere with your normal driving. Sit in your car and take the wheel as if you were preparing to drive it. Look at the placement of your hands (everyone is different) then put the spinner where your hands won’t bump into it. Many users decide that between 11 o’clock and 1 o’clock on the wheel is a good position for a steering wheel spinner.

How far do you tilt your steering wheel? If you tilt it down too far, the clamp on the spinner could catch your clothes when you’re spinning. You may need to adjust the steering wheel slightly for smooth operation.

• Rubber: Rubber steering wheel spinners offer the best grip in all types of weather and temperature conditions.
• Plastic: Plastic steering wheel spinners can become slippery if there is condensation inside your car. Also, during the summer, the plastic may deform under pressure if the temperature in the car is excessive. This is a particular concern if you live in the desert Southwest. On a day where the temperature is 100 degrees, the temperature inside the car can reach 150 degrees!
• Metal: Aluminum or stainless steel steering wheel knobs are second to none in their durability. They can also be exceedingly cold on your hands during the winter. Consequently, you should probably avoid a metal steering wheel spinner if you live anywhere north of the desert Southwest or the Gulf Coast states.
• Wood: Wood can have a nice shine and luster to it, making it a perfect luxury item for upscale cars. But unless you take care of it with proper preservatives, oils, and polishes, wood can succumb to the weathering effects of the sun. Even if properly cared for, another downside of wood construction is that polished wood spinners can be slippery in wet or muggy weather.

The type of clamp on a steering wheel spinner is important. You don’t want the spinner slipping when you’re trying to turn. You can hurt yourself in a hurry that way, not to mention whoever or whatever you run into if you lose control of your car. Think twice if a clamp doesn’t have screws that can tighten and lock the spinner in place.

The best clamps will have the screw coming up from beneath the knob. You’ll may have to twist yourself into a pretzel to install it, but it will hold tight. Other types have screws that go in from the top down. These are easier to install, but the screws attach from both sides of the wheel, inside and out. Anything that sticks out from the wheel has the potential to snag your clothes when you’re getting in and out of the car.

Lubricant: WD40 Company Specialist Silicone Spray Smart w/Straw
Keep your wheel spinner spinning freely with this silicone spray from DW40. It’s safe to use on rubber, vinyl, and plastic and also lubricates steel and non-steel surfaces. It dries quickly and won’t make a mess.

Cleaner: 303 UV Protectant Spray
Keep your spinner clean with this multi-surface spray from 303 that repels dust and dirt and protects against UV damage. Simply spray it on and wipe it off.

Windshield shade: EzyShade Windshield Sun Shade
Use this elegant windshield shade from EzyShade to keep the sun off your spinner and steering wheel during the hot summer months. Folds up easily to stash under the car seat while you’re driving.

Steering wheel spinners typically cost from $10 to $30 or even more. The highest prices usually correspond to larger models designed for use with big rigs. Price is only loosely tied to quality when it comes to steering wheel spinners, so shop carefully, whatever your chosen price range.

• Mount your spinner legally. Federal regulations require steering wheel spinners to be mounted on the inside of the steering wheel. If they are mounted on the outside of the steering wheel, the mounting brackets could catch on your clothes or prevent the steering wheel from turning safely.
• Use two hands. When using a spinner to turn, make sure your other hand is firmly on the wheel when you release your spinning hand from the spinner. This will allow you to slow the wheel’s turn as it spins back and maintain complete control.
• Muscle power is still needed. Steering wheel spinners don’t make turning the wheel any easier in terms of how much force is required. But a spinner can make turning the steering wheel easier if one of your arms is significantly weaker than the other due to injury or other ailment.

We like the QUICK-KNOB Quick Release Trucker Steering Wheel Spinner. This is a heavy-duty classic "truckers" knob with a quick-release clamp. It fits all wheel thicknesses for trucks. Due to its size (and high price) it is not meant to be used with passenger cars, pickups, or vans.

We also like the APROFAMILY Polished Wood Steering Wheel Spinner. This is a luxurious wooden spinner, polished to a rich finish that shows off the wood grain. The metal clamp has a rubberized interior to grip the wheel. If you want to add a touch of class to your car, this should do it.

Q. What is the most common use for steering wheel spinners?
A. Steering wheel spinners are commonly seen on long-haul trucks, tractors, and construction equipment.

Q. Is there anyone who is prohibited from using steering wheel spinners?
A. No. If you have a valid driver’s license, you can use a steering wheel spinner.