When it comes to wheel spacers, you'll quickly discover the majority of people have already made up their mind and have strong opinions of them. On Google, YouTube, and car forums, you will find two groups: those that claim wheel spacers are entirely safe when installed correctly and those that urge others to avoid them like the plague.


For most car enthusiasts, spacers are the easiest way to get perfect fitment from their wheels and tires. Wheels tend to be pushed slightly inwards (generally 5mm-30mm) for improved drag and fuel efficiency. This, however, doesn't create a sleek and flushed appearance. The purpose of wheel spacers is to increase the "space" between the wheel and the wheel hub. This pushes the wheels and tires slightly outward.

Wheel spacers are also used for trucks and off-road vehicles. This is also done to increase the clearance and room between the wheel and wheel hub. This is highly beneficial for off-road vehicles because larger off-road tires can be installed. This directly impacts and improves performance, traction, and off-roading capabilities.


Wheel spacers are safe to install on your vehicle, only if they are properly installed. This entails purchasing high-quality spacers from reputable companies. The wheel spacer should be of appropriate size and should be hub-centric. This means the wheel spacer will fit securely between the wheel and wheel hub. A torque wrench should be used to torque the lug bolts to appropriate tension.

When wheel spacers fail, most of the time it is due to the quality of the wheel spacers themselves. When installing or purchasing spacers, ask if they are cast aluminum, forged aluminum, billet aluminum, steel, or titanium. If you are going to install wheel spacers thicker than 1 inch, we highly recommend installing bolt-on type wheel spacers. They bolt on to the wheel hub, and the wheels bolt on to the wheel spacer.


If properly installed, then there should be no durability issues. Two common problems people have are the lug nuts becoming loose and ultimately leading to the entire wheel coming off or the wheel studs bending. The only explanation for this is the lug nuts were not torqued properly and the weight of the vehicle was put entirely on the loose wheel bolt(s) and/or wheel stud(s). A wheel stud cannot merely be bent by tightening down a wheel spacer between the wheel and wheel hub.

A common misconception about wheel spacers is the affect they will have on your wheel bearings. If properly installed, wheel spacers will not cause your wheel bearings to fail prematurely or suddenly. As long as high quality wheel spacers are used, and they are of appropriate size for your vehicle, there will be no problems. The hub bores on your wheel hub and wheel should match the hub bore on the spacer.


The lug nuts need to be torqued to their required tension. We recommend you get wheel spacers installed at reputable wheel shop. If you are installing these at home, we highly recommend using a torque wrench. As a precaution, we recommend you do a torque check every 25,000 miles. This will catch any loose lug nuts or bolts.

If you are curious about learning more about wheels, please read our previous article on Lugs, Nuts, and Bolts.

Lug nuts, also known as wheel nuts, are used to hold a wheel in place. Your vehicle can have four, five, or six lug nuts. This is dependent on the type of car you have, such as a small economy sedan, SUV, truck, or sports car. As lug nuts are engineered to hold a certain amount of pressure, larger cars will have more lug nuts. Some vehicles come factory-equipped with loose wheel nut sensors. These allow you to know when a lug nut is loose. As the majority of cars are not equipped with such sensors, it is a good idea to check for loose lug nuts as a preemptive measure.

If any loose lug nuts are spotted, you should have them tightened to manufacturer specifications. Use the lug wrench that came with your car and tighten any loose lug nuts. It is highly recommended to use a torque wrench, if available. A torque wrench measures the amount of force applied; therefore, you can rest assured knowing your lug nuts are properly tightened.

If you have lost a lug nut, the pressure asserted from driving around will be distributed to the remaining lug nuts on the wheel. You can safely drive at legal speeds with a missing lug nut; however, you should head to your nearest tire shop as soon as possible. Over time, this excess pressure can wear down the other lug nuts. This can lead to adverse effects on the wheel bearings. Because the wheel bearings will be subjected to more stress, they can wear out prematurely.

A common problem with vehicles missing a lug nut is car wobble. Car wobble and the additional stresses placed on the vehicle as it turns, brakes, and accelerates can cause other issues: the remaining lug nuts can loose, and the wheel studs can break. Wheel studs placed over them and bolted in position using the lug nuts.

If you are driving with a loose lug nut, we recommend you have it tighten as soon as possible. If you are driving with a missing lug nut, it is highly important you have it replaced as soon as possible. It can be potentially dangerous to drive with a missing lug nut because of the extra pressure exerted on the remaining lug nuts. This pressure can damage the lug nuts, wheel studs, and could cause the other lug nuts to loosen.

If you are interested in reading more about how wheels are held in place, check out our article on Lugs, Nuts, and Bolts.

What Is TPMS?
Tire Pressure Monitoring System or TPMS for short refers to the system that monitors your vehicle's tire pressure. This system alerts you when any of 4 tire's pressure drops below the manufacturer's recommended acceptable level. TPMS was first introduced in the 1980s on ultra-luxurious European vehicles. TPMS was introduced to the US with the 1991 Chevy Corvette. Now, all cars sold in the US are required to have TPMS. 

Why Are TPMS Sensors Required?

In 2000, the TREAD (Transportation Recall Enhancement Accountability and Documentation) Act was passed. This Act requires all new cars sold in the US after September 2007 must be equipped with TPMS. The TREAD Act was pushed for approval mainly due to the Ford and Firestone Tire controversy. This was a three year period in which tire tread separation and failure was traced back to over 271 fatalities and over 800 injuries in The US. 

Where Are TPMS Sensors Located?

All new cars have the TPMS sensors located inside each wheel and assembly. The sensors are attached to the valve stem and held in place with a nut. Because they are inside the wheel and secured in place against the wheel barrel, damage is quite rare. External TPMS sensors are available; however, they are considered aftermarket. All external TPMS have the sensors located in the tire caps. These don't communicate directly with your car. Instead, an additional digital display is installed in your vehicle to give you real-time tire pressure readings. 

Different Types of TPMS

An Indirect TPMS will use the same technology that the anti-lock brake system uses. These sensors do not measure the actual tire pressure of each tire. Instead, the sensors measure the speed at which each wheel is turning and is used by an onboard computer to compare that speed with the rest of the wheels and the rate the car should be traveling at. If a wheel is spinning faster than the rest, the onboard computer determines that tire is under-inflated and alerts the driver.

A Direct TPMS uses air pressure monitoring sensors within each tire that reads the specific pressure levels. Cars equipped with direct TPMS will have an option to view the air pressure of each tire in real time. Due to the costs, these types of sensors are generally only seen on higher-end or luxurious vehicles. All this data is sent wirelessly. Because each sensor has a unique serial number, the system can distinguish between itself and other vehicles' TPMS.

It should come to no surprise that BMW does not produce their own wheels and rims. The auto brand subcontracts wheel manufacturers around the globe to provide their wheels.

BMW isn't the only company doing this. All major vehicle manufacturers subcontract wheel manufacturers to act as OEM suppliers. This is done because car brands do not generally have the expertise nor resources required to manufacture their own wheels. A wheel manufacturer can mass produce wheels more efficiently, cheaper, and faster than a car brand could in-house. BMW and the wheel manufacturer handle the design and specs of the wheel, while, the wheel manufacturer handles the production.

Below is a partial list of some of the different wheel manufacturers BMW has worked with in the past.

BBS Wheels

BMW M5 Style 65 BBS

BBS is a world-renowned racing and aftermarket wheel manufacturer. They have produced numerous wheels for BMW including Style 42 seen on the 3 5-Series, Style 65 seen on the M5 (seen above), Style 71 seen on the 3 series, Style 162 seen on the 3-Series, Style 197 seen on the 3-Series, and Style 230 seen on the 3-Series.  

Borbet Wheels

BMW Style 179 3 Series

Based in Germany, Borbet is one of the oldest wheel manufacturers in the world. Borbet manufactured Style 37 seen on the 5-Series, Style 95 seen on the 7-Series, Style 132 seen in the X5, and Style 179 seen on the 3-Series (seen above).

Cromodora Wheels

Cromodora is a major wheel manufacturer based in Italy. They produced Style 18 seen on the Z3, Style 69 seen on the X5, and Style 71 seen on the 3-Series (seen above).

Ronal Wheels

BMW X5 Style 214

Based in Germany, Ronal is one of the largest wheel manufacturers in the world. They produced Style 132 seen on the X5, Style 199 seen on the 3-Series, and Style 214 seen on the X5 (seen above). 

What other style do you know are made by these brands? Comment below. 

Just like your car's paint needs protection from the elements, your wheels require protection too. There are wheel products specifically designed to protect your wheels. These products are no longer only available to car enthusiasts or wheel shops. Although there are different types, and go by different brand names, they are commonly known as wheel sealants/waxes.

Similar to car wax, these sealants and waxes form a protective layer between a wheel's surface and the harsh elements. The products are meant to improve and maintain the pristine condition of your wheels. They protect against dirt, brake dust, tar, and even from scratches and scrapes. When looking for a wheel sealant/wax look for products marked explicitly able to repel brake dust. If left on a wheel for a prolonged period (even a matter of a few weeks), brake dust is capable of eating through your wheel's clear coat. Brake dust can also lead to corrosion on aluminum and chrome-plated wheels.

Washing and cleaning treated wheels will never be easier. The contaminants do not penetrate the protective barrier formed by the sealant/wax and are repelled. Those that do manage to stick on to the wheels can be quickly and effortlessly taken off with a soft-bristled brush. When rinsing with water, there will be few chances for water spots because the water will just run off. To increase the life of your wheels and the sealant/wax, we recommend thoroughly drying your wheels and tires.

If you would like to learn how to wash and clean your wheels, please check out our previous article on preventing wheel corrosion.

There are two different types of wheels: Steel and Alloy. We will go over what differentiates them apart, as well as their advantages and disadvantages.

As the name implies, steel wheels are manufactured from steel. You will notice steel wheels are much simpler in appearance than alloy wheels. They generally come in minimal styles and are available in black, silver, and white finishes. Due to their simplicity, hubcaps tend to cover them for aesthetic purposes. Steel is heavier than aluminum alloy; therefore, steel wheels will have slower acceleration. They are rather inexpensive to purchase and replace; however, don't let the price fool you. If you live in a very sandy area or the desert, your car may be equipped with them. Steel wheels are great for off-roading. This is due to how durable steel is, and the extra weight from the wheels provides excellent traction. This also makes them great for driving on snow.  

On the other spectrum, we have alloy wheels. They are much more aesthetically attractive. They are available in unlimited styles, finishes, and colors. Just a simple online search will pull up hundreds, if not thousands of different choices. Because they tend to be lighter than steel wheels, they are better for handling and acceleration. This is the reason they are equipped on sportier cars. There are a few drawbacks though. In addition to being more expensive to maintain, they are prone to damage. Curb rashes and corrosion from acids and salts will hinder an alloy's wheel appearance and performance.

You should take into account the differences mentioned above when deciding which type of wheel to buy. If you are ready to purchase, our online store carries both steel and alloy wheels for all makes and models.


According to a recent report by the AAA, a third of all new cars sold in the United States are not sold with spare tires. The same report found 136 vehicle models that do not include spare tires as stand equipment. Instead, they are offered as an option for an additional charge. An estimated 30 million cars sold in the last ten years, were not factory equipped with spare tires. This percentage might increase as automakers search for different ways to reduce weight in vehicles and improve fuel economy.

Some of these vehicles lacking spare tires come equipped with standard run-flats. They can be safely driven up to 50 mph and offer 100 miles of range. Other automobiles come equipped with tire inflation kits. The kits generally come with sealants and a compressor to re-inflate the tire. It should be noted; however, the kits will not be able to fix all tire punctures, in particular, any sidewall damages or blowouts. It should also be noted some tire manufacturers declare tires to be unrepairable once the sealant is applied. The sealant can also prevent the tire-pressure monitoring system from working correctly and may need to be replaced.

The majority of vehicle owners who are not aware if their car comes with a spare tire will most likely to come to that realization when they need it the most: when they are on the side of the road with a flat tire. We recommend all drivers be prepared in case of a flat tire or blowout. To be prepared, every car owner should know whether their vehicle has a spare tire. If the car does not come equipped with a spare tire, it's recommended drivers either purchase a spare or verify their automobile comes fitted with either a tire-inflation kit or run-flat tires.

If you are interested in purchasing a tire, please check out our Take-Off Tires page.

Should you upgrade to wider wheels? This article explains the differences between a regular tire and wider tire. The size and width of your tires will directly determine how your car will handle.

Dry Roads

There is nothing more dry roads love than rubber. If you have the need for speed, then wider tires are for you. The extra traction provided by the wider tires will allow your car to accelerate quicker. The increase in surface area will directly improve stability. The stiffer sidewall will allow you to take sharper corners due to less vehicle roll, while the extra grip will reduce braking distance. The smaller sidewall will also give your car a more low-profile appearance.

Wet Conditions

Although wide tires are great for the summer, they won't perform the best in rainy conditions. If your tires were not meant to handle all weather types or rain, we advise you to adjust your speed, avoid puddles, and drive carefully. There are wide tires made specifically for all weather/rain. These have rain grooves that are efficient in removing water from contact surface.


There will be a decrease in fuel economy. The larger width of the tire will increase the surface contact with the road/tarmac. The wheels will also generally be heavier than regular wheels. Although this is great for handling, the combination of both will lead to an increase in rolling resistance. To the average person; however, the decrease in fuel economy will be too small to notice. When traveling at a constant speed of 60 miles per hour, the reduction in mileage can be negligible.

Pirelli hasn't reinvented the wheel. They have simply made it better. Pirelli combines tire performance with technology to create the world's first smart tire. Meet Pirelli Connesso. Translated from Italian, connesso means "connected".

Instead of using the usual tire pressure monitoring system (TPMS), the tires come equipped with sensors built into the tire's grooves and inner wall. These sensors can report tire pressure, inside temperature, and load data that is communicated in real time. With the use of Bluetooth, they work through the Pirelli cloud and with applications found oniOS and Android based devices.

The system is able to store historical data regarding mileage, maintenance, wear, and road conditions.  The data collected through the IoT cloud-based system will allow for predictive tire maintenance. For the average person this might not matter much; however, this might be highly beneficial for fleet service managers.

Thanks to app alerts, the tires can notify the user when tire pressure changes and when the tire is worn down. Through the Pirelli application, a user is able to identify the closet tire shop and book an appointment.

No word has been given on availability yet, as Pirelli has been working with automakers to introduce these as factory tires. The first production car expected to benefit from the Pirello Connesso tires is the Ferrari FXX. Only time will tell when these tires make it to regular average cars.

Tires are expected to wear out evenly and gradually over their lifetime. Irregular tread wear may occur for multiple reasons and could be signs of problems with your vehicle. Below are the most common different types of tire wear. Check the list below to stay up to date.

1. Center Wear

Tire tread is only worn down the center and not very much on the sides. The most common cause of this is driving with over-inflated tires. When a tire is over-inflated, the tire balloons out more in the center. This prevents the tire from making full contact with the road. To avoid this make sure all 4 tires are correctly inflated. Consult your owner's manual if you don't know your vehicle's tire pressure.


2. Side Wear

Side wear is the complete opposite of center wear. The tire will have worn down shoulders but will have a strip of normal-looking tread at the center. The cause of this is driving with under-inflated tires. When a tire is under-inflated, the shoulders make contact with the road and push the center inward. To prevent this make sure all 4 tires are properly inflated. Consult your owner's manual if you don't know your vehicle's tire pressure.


3. Cupping Wear

Cupped tires will have random worn-down patches all over them. Commonly characterized as if someone shaved some parts of the tread. Having worn out shocks and struts are the main culprits. Shocks and struts are meant to prevent your car from bouncing up and down when driving over a bump. When the vehicle is bouncing continuously, the tires do not maintain constant contact with the road surface. This bouncing causes the rubber to prematurely wear down in certain areas. Unbalanced tires and wheels may also lead to cupped tires.

4. Feathering

Feathering refers to when the tread blocks are worn down on one side but have reasonable wear on the other. While this wear can be spotted visually, it is quite easy to feel feathering when you run your fingers along the tire tread. There are two common culprits. Misaligned wheels most commonly lead to feathered tires. Aggressive driving also leads to feathered wear, especially high-speed cornering.


5. Sidewall Wear

Sidewall wear is caused by drivers parking too close to the curb and scraping the sidewall against it. If the damage is too extreme, the sidewall wear can cause the tire’s core to weaken. This is considered highly dangerous especially if driving at highway speeds.


It is recommended you regularly check your tires' tread depths and wear conditions. This will allow you to know when it is time to replace your tires and can also help you detect potential car problems. This will get the most value out of your vehicle and tires.