As a rule of thumb, a set of new extended wheel bolts is necessary to safely secure your 10mm spacers. If you are using 10mm spacers with factory wheels, then figuring out the proper size of longer wheel bolts will be easy. Simply add up the 10mm and the stock bolt length, the result value is the length of the extended bolts. Giving an example, if the OE wheel bolt length is 27mm and you get a 10mm wheel spacer installed, then you would need longer wheel bolts with 37mm length (stock bolt length + spacer thickness = extended wheel bolt length).
If you have replaced the wheels, then you should take the lug hole’s thickness into consideration. Measure the lug hole’s thickness of both aftermarket and factory wheels, and subtract one value from another. Assuming the result is 2mm. Then the proper wheel bolts length will be 39mm. On the other hand, if the lug hole is thinner than the stock one’s, you may change to shorter extended wheel bolts.
Floating Seats Extended Wheel Bolts
Typically, you need extended wheel bolts with the same seat type as the stock bolts you’re using. However, aftermarket wheels often come with various seat types. It is necessary to check the seat type before purchasing. There are three common-used types of extended wheel bolts: conical wheel bolts, ball wheel bolts, and flat wheel bolts. Equipping your vehicle with the correct wheel bolts is very important to ensure the safe and reliable mounting of the wheels.
The seat parts of BONOSS extended wheel bolts are floating styles. This makes it convenient to change the seat types to fit various wheels. Compared to the integral-seat wheel bolts, they are more flexible. By simply changing the seat spacer, you can transform a conical seat into a ball seat. Furthermore, the separate design eliminates the bolts loosening and abnormal sound caused by the PCD hole coaxially deviation between the vehicle hub and wheels while driving. Since the floating seats are not fixed, they can effectively prevent your beautiful wheels from being scratched by the bolts.
Types of Extended Wheel Bolts
Basically, there are two types of extended wheel bolts available in the automotive world. They are steel wheel bolts and titanium wheel bolts. The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. Usually, steel extended wheel bolts are stronger. By the forging process, they can reach grade 12.9. The minimum tensile strength of grade 12.9 wheel bolts is 1220MPa which allows the bolts to withstand more force before breaking, changing to higher grade wheel bolts improves safety.
On the other hand, titanium extended wheel bolts will ensure a safe thread engagement while significantly reducing the unsprung weight. They are considered to be one of the easiest and quickest items that bring your car to higher performance. Many racing vehicles will use titanium extended wheel bolts for strength and lightweight. As most people know, reducing unsprung weight makes your car faster. Lighting the vehicle weight decreases fuel consumption and improves engine efficiency. As the weight savings, you will get a better driving experience.