Alloy Wheel Repair

Alloy wheels can make a big difference in a car or motorcycle, with improved handling and a beautiful appearance. Because of this, enthusiasts have been upgrading to larger wheels for years, replacing basic steel wheels and hubcaps to set a vehicle apart from others and to provide a smoother ride.
The staging area at the repair facility.To capitalize on this trend, manufacturers have begun to change their styling to appeal to consumer demand for larger and flashier wheels, equipping even everyday vehicles like SUVs, compact cars, vans and motorcycles with larger-diameter alloy wheels.
While they look great, alloy wheels present a problem. Wheels from European manufacturers like Volvo, as well as 2- and 3-piece wheels, like BBS, tend to be soft and are more easily damaged. When they are damaged – bent or curbed, among other potential issues – do you need to completely replace them?
Replacing your wheels – through a dealer or local performance wheel shop – can cost hundreds of dollars and take days, depending on the severity of the damage.
Repair vs. Replace
Wheel repair in many areas has been saturated with many companies claiming that they can fix any wheel. But the truth is that many of them are “fly by the night” companies with a sledgehammer and a torch. This is not the proper way to fix any wheel. Some can make the wheel unsafe by not properly applying consistent pressures in a specific way with an exact heat. They stress crack the wheel beyond safety standards and call it a repaired wheel. But you could be jeopardizing your safety and that of your family by using someone without proper experience.


Metro Wheels’ Repair Process
The repair process is straightforward. First, we mount the wheel accurately on a vehicle simulator. With the proper heat, consistent hydraulic pressure and light vibrations under pressure, the alloy wheel will move – without cracking – back to its original condition. If there is a crack that can’t be seen by the naked eye (under chrome or paint), it will instantly pop out; our certified welders will then fill and repair the crack. After the wheel has cooled, it will retain its original strength. Heat, consistent pressure and vibration are key to an excellent wheel repair.
detailing areaWhen a wheel is delivered to Metro Wheels, it is either dropped off by the owner, shipped in or picked up in the metro Atlanta area from our wholesale customers. We generate a work order for each individual wheel detailing the customer’s information and any special instructions. Each wheel is assigned a unique work order number that is engraved on the inside of the rim, so that Metro can track its history precisely. This number also makes it much easier to track the wheel throughout the repair process.
Once identified, each wheel is washed thoroughly to remove all brake dust, because the dust could be hiding additional scratches, gouges or cracks. Metro uses a pressure washer system with a diluted acid-based cleaning compound that will not damage a wheel’s existing finish.
wheel washerThis is particularly important because brake dust removal is essential to determining the level of damage to a wheel. But it must be done correctly, because wheels with a polished or anodized finish can be damaged if the wrong washing compound is used. For instance, a two-piece wheel with a bright lip that is not chromed is typically an anodized finish, a chemical treatment that is very hard to see. If the wrong cleaner or acid is used on such a finish, the wheel surface will be streaked; however, this anodized finish can be stripped off and any scratches buffed out.
Lateral runout is the hardest type of repair to accomplish. It also happens to be the most deceptive, because while a wheel may look like it has only minor rim damage, it can actually be fairly significant and not easily seen to the naked eye unless the wheel is spinning. This is especially common on newer front-wheel-drive cars, where much of the force is cantilevered to the back.

Cracks can be Serious Business
Cracks are of particular importance, because they are the single most common type of damage that can leave a wheel beyond repair. When a wheel bends near the base of a spoke, haze marks in the finish can sometimes be seen and indicate cracks. Because repairing a wheel is not always best in a particular situation, it is important that the wheel is thoroughly examined.
Cracks are particularly common on chrome-plated wheels, where the chroming process tends to render the wheel more brittle than a standard-finish wheel. Sometimes, if a chrome wheel is bent severely, the chrome has to be removed because there can be cracks underneath the chrome. In the case of a cracked chrome wheel, Metro will grind the chrome out and re-weld it.
Finally, we inspect for finish defects, searching out poor paint finish or additional scuffs and scratches.

Color and Finishes the Way You Want
paint boothIf the wheel needs refinishing, it is first stripped using an acrylic medium similar to sand. This medium is superior to steel shot or metal oxide, which are more commonly used. Though they remove the finish more quickly and are cheaper, they also rough up the surface and tear away some of the metal. This is particularly destructive when you want to retain any original cast markings that the manufacturer has displayed.
The wheel is placed in a blast cabinet with circulating plastic beads, removing the finish without removing metal. But we do not do this in every situation, because old paint is always the best primer base. We will sometimes fill in the existing finish, prep the surface and cover it with new paint.
The next step in the process is straightening the wheel. This removes the majority of the damage as well as any side-to-side wobble.
After straightening, our welders rebuild the outer lip and repair any scrapes or cracks. Metro uses a Tig welding process which matches the base alloy with the weld alloy. The weld is then ground down or relathed and renders the wheel back to its original condition.
Once the wheel is true, it is time to refinish, re-machine or re-polish the wheel. Metro uses a computer color-matching system to match the factory paint finish. If the color is not on file, our painters can match by eye, or deliver a custom finish that is white, anthracite or matched to the owner’s specifications.
Upon completion, each wheel is subjected to a final quality check. It is examined for runout and the finish is checked for dirt or dust in the paint, unevenness or orange peel. If everything checks out, the wheel is ready for tire mounting or delivery.