How to Change Bolt Pattern Without Adapters?

The bolt pattern is a very important part of the wheel design. Matching the patterns when fitting a new wheel means ensuring safe mounting and smooth work. And vice versa, if you get the wrong bolt pattern on your new set of wheels, no matter how similar they seem to the OE, they won’t fit snugly enough.

There are usually two options if you need to change the bolt pattern on your wheels. The first one involves installing aftermarket adapters, and the second option is welding and drilling holes in your original wheel hub. Both options have pros and cons, but they are perfectly applicable if done right.

Sometimes, adding adapters is not an option. For instance, if your vehicle has narrow fenders or the wheel offset does not leave enough space for extra inches. In such cases, wheel adapters will cause more harm than good. Protruded tires will change handling and can even cause friction on the surface.

If you choose to change the lug pattern without any adapters, there are a few things you need to know first. Redrilling hubs is not the most risk-free modification out there. To do it properly, you need an expert and appropriate equipment. Remember that wheels are, first and foremost, a crucial part of the vehicle.

Is It Possible to Change the Bolt Pattern on a Wheel?

Altering a wheel stud or bolt pattern is possible and accessible for most vehicles. This modification does not require any complicated processes, but it sure does take a professional car mechanic with special tools and machines.

During the process, the old pattern is welded shut and then a mechanic uses heavy equipment to drill a new bolt pattern into the hub. The most important issue is whether or not the wheel hubs have enough durability to be redrilled. The thickness can vary among models years and manufacturers, so if your vehicle does not have enough “meat”, drilling a new pattern can be trickier.

The next thing is precision. Remember that this new set of holes will hold bolts or studs in place and distribute the vehicle’s weight throughout the hub and the wheel. They must be strategically placed and measured to not be too tight or loose. The slightest discrepancy will lead to fast deterioration of the metal.

This is why, although it doesn’t take a rocket scientist, trying to redrill a new bolt pattern in your own garage is a very bad idea. Only car experts should be allowed near your wheel hubs to give them a complete makeover. Think about your safety first, it costs much more than labor fees in a local shop.

Can You Change the Lug Pattern on a Wheel Without Adapters?

Wheel adapters may be a little overrated, you can definitely change a bolt pattern without their help. They inevitably alter wheel offset, add extra weight and concern some automotive experts. So, naturally, some car enthusiasts would opt for other techniques that do not involve adapters to alter a bolt pattern.

In fact, this kind of wheel modification is so common there are special tools to assist the most daring DIYers to redrill the bolt pattern on their own. We do not advise you to attempt this at your own risk, an experienced mechanic can predict certain problems invisible to an untrained eye.

But for your information, there are so-called “jigs” or “lug bolt drilling guides” that do just that. They guide your hand in the right direction to drill the new holes to match the pattern on your new rims. They also make the process much easier. You can find some of the best drilling guides on Rotten Leonard’s website if dozens of forum posts are any indication of trust from customers.

Be especially careful with drilling rear rotors. These parts are a bit trickier than their front counterparts due to existing holes, so it would be better to consult a specialist before you touch them with the tools.

Before you decide to redrill the bolt pattern, take your time to carefully consider every option and assess the complexities and potential costs involved in modifying bolt patterns. Sometimes, a set of new hubs can do more good and minimize the risks.

How Do You Drill a Bolt Pattern?

If you feel confident about redrilling the lug pattern, more power to you. We are here to help you with this process as much as possible. Here is a step-by-step breakdown of the process:

Step 1. Ensure Compatibility

The first priority is to make sure that the new wheels have a compatible size and offset. They don’t have to be the same size or even the same offset, but they must fit perfectly. Next, check if the hub itself has enough material thickness and structural integrity to support the new bolt pattern.

Step 2. Measure & Mark

Measure and mark where exactly the new holes will be according to the specifications of the desired bolt pattern. Check and double-check the accuracy of the measurements and marking.

Step 3. Remove the Wheels

Carefully remove the wheels from their hubs. Take your time not to damage the holes. And use proper tools to ensure your own safety during the whole process.

Step 4. Secure the Wheel

Take the new wheel you want to install and secure it with a vice or a clamp. This step will help you drill clean holes while the wheel stays firmly fixed in one place.

Step 5. Transfer the Marks

Now, transfer the marks from Step 2 onto the wheel's mounting surface. Pay extra attention to alignment and accuracy. There is no way back once you drill the holes, so do it right.

Step 6. Prepare to Drill

Prepare your equipment or tools for drilling. If you have access to a professional press, check the speed settings and secure the wheel in place.

Step 7. Do the Thing

Apply steady pressure and start drilling at a slow and controlled pace. Maintain a consistent speed and avoid excessive force. This way, you can drill clean holes.

Step 8. Clean

Clean the wheel and admire your work. You cannot see if there are any issues while there are so many shavings all around. These pesky things can also get stuck between the threads when you put in the bolts.

Step 9. Test

Test fitment and balance before you install the wheel.

Step 10. Installation

Place the modified wheel onto the vehicle's hub and tighten the lug nuts. Don’t forget to follow the manufacturer's recommended torque specifications.

The fact that you can alter the bolt pattern yourself does not mean that you should. A lot can go wrong in this process if you lack experience and professional tools. Careful balancing and precise drilling are nearly impossible without heavy and exorbitantly expensive equipment.

Does PCD Mean Bolt Pattern?

They are not the same, no. The term “bolt pattern” refers to the number of bolts and the imaginary circle on which they are located. In contrast, the PCD (pitch circle diameter) or bolt circle refers to the size of this imaginary circle. So, although closely related, these two stand apart.

Does Rim PCD Matter for Changing Bolt Pattern?

They certainly are important to find a perfectly fitting wheel. If the PCD of the new wheels matches the PCD of your current wheels, chances are, they will fit well.

If you are changing the bolt pattern and the PCD, there are devices for that as well. They are called pitch circle diameter converters. But if you don’t want to use adapters or converters, perhaps, the best option is to replace the hubs.

Advantages of Changing Bolt Pattern without Adapters

This method of altering bolt patterns has its merits:

1. Offset and backspacing should not be affected if you pick similar wheels.

2. Helps you customize your vehicle with new wheels.

3. Gives you more available options for increased performance in the aftermarket.

4. Changing wheels is easier than with adapters installed.

Many car enthusiasts would argue that the greatest advantage of changing your wheel bolt pattern without adapters is that it alters only one thing, the pattern. Adapters take up some space, forcing you to make adjustments to fit it and the new wheels inside the well and fenders.

Problems of Changing Bolt Pattern without Adapters

Professionals advise against changing wheel bolt patterns for good reasons:

1. It can be more expensive than installing adapters.

2. Too delicate and risky to do without expertise and special equipment.

3. Mistakes can cost wheel or hub integrity and cost a lot more to fix.

4. Decreases resale value.

5. Can void your warranty.

If you plan to resell the vehicle after a couple of years, redrilled hubs can become a liability. Many people express concerns about the safety and durability of such modified wheels. And besides, major mods like this can and probably will affect your insurance rates.