/Wheel Spacers FAQ
Wheel Spacers FAQ2019-09-23T01:43:48+00:00
How to install BONOSS BL Series?2019-09-23T02:21:48+00:00
  1. Remove original wheel bolts and wheel.
  2. Put BONOSS Wheel Spacer on hub of car (where hold the wheel) Please ensure that the spacer is fully seated and flush with the hub.
  3. Put wheel onto the spacer and match the wheel & spacer bolt holes and mounting hole.
  4. Insert new longer BONOSS wheel bolts. Carefully hand turn bolts making sure that they spin in easily and fit well.
  5. Repeat above step with the bolts left.
  6. Use hand wrench to tighten extended bolts in a star pattern.
  7. Spin the wheel and tire to check whether it cause any noise or interference or not before fully tightening bolts.
  8. Use torque wrench set with wheel manufacturers’ specifications to tighten the longer bolts in a star pattern.
How to install BONOSS BLS Series?2019-09-23T02:22:02+00:00
  1. Remove original wheel and studs.
  2. Replace original wheel studs with BONOSS extended studs.
  3. Put BONOSS wheel spacer on hub of car (over the new studs) Please ensure that wheel spacer is fully seated and flush with the hub.
  4. Put wheel onto the BONOSS studs and firmly seated against wheel spacer.
  5. Fasten wheel with original studs. Carefully hand turn nuts making sure that they spin in easily and fit well.
  6. Repeat above step with the studs left.
  7. Use hand wrench, snug up the studs in a star pattern.
  8. Spin the wheel and tire to check whether it cause any noise or interference or not before fully tightening studs.
  9. Use torque wrench set to wheel manufacturers’ specifications to tighten the wheel studs in a star pattern
How to install BONOSS BLM Series?2019-09-23T02:24:03+00:00
  1. Remove wheel.
  2. Place BONOSS Wheel Spacer on hub axle of vehicle making sure that the spacer is fully seated and flush with the hub.
  3. Use BONOSS lug nuts to tighten wheel spacer to original studs. Carefully turn the nuts by hand to make sure they are easy to screw in to avoid cross-thread.
  4. Repeat step 3 with the rest of lug nuts.
  5. Tighten the lug nuts to the star pattern with a wrench.
  6. Use a torque wrench specified by the manufacturer to snug up the lug nuts in a star pattern.
  7. Ensure the original studs do not protrude past wheel spacer surface.
  8. Install the wheel on the new studs and let it firmly against the wheel spacer.
  9. Secure the wheel with the factory lug nuts. Carefully turn the lug nuts by hand to make sure they are easy to screw in to avoid cross-thread.
  10. Repeat step 9 with the rest of lug nuts.
  11. Tighten the lug nuts to the star pattern with a wrench.
  12. Before fully tightening, turn the wheel and tire to check check whether there have any noise or interference.
  13. Use a torque wrench specified by the manufacturer to snug up the lug nuts in a star pattern.
How to install BONOSS BLA Series?2019-09-23T02:44:50+00:00
  1.  Remove wheel bolts and wheel.
  2.  Place BONOSS Spacer on axle of vehicle (where the wheel was attached) making sure that the spacer is fully seated and flush with the hub.
  3.  Fasten BONOSS spacer to car using attached special bolts. Carefully hand turn bolts making sure that they spin in easily so as to not cross-thread. Repeat with the rest of bolts.
  4.  With hand wrench, snug up the bolts in a star.
  5.  Tighten the wheel bolts in a star pattern using torque wrench set to factory specification.
  6.  Ensure no bolt heads come out spacer.
  7.  Place the wheel onto the spacer and carefully form up the wheel / spacer bolt holes and mounting hole.
  8.  Carefully hand turn wheel bolts and make sure that they spin in easily so as to not cross-thread.
  9.  Repeat step 8 with the rest of bolts.
  10.  With hand wrench, snug up the bolts in a star pattern.
  11.  Before fully tightening, turn the wheel and tire to check whether there have any noise or interference.
  12.  Use a torque wrench specified by the manufacturer to snug up the lug nuts in a star pattern.
How to confirm the length of BONOSS extended bolts?2019-09-23T02:01:27+00:00

After adding wheel spacer, the original bolts will be too short and it’s not safe, so the original bolts need to be replaced with extended bolts.
Suitable length of BONOSS extended bolts = Length of original bolts + thickness of wheel spacer.
Note: If the extended bolt length is greater than original bolt length + thickness of wheel spacer, then you will need to check whether the extended bolts touch the brake system or not.

How to replace BONOSS BLS Wheel Spacer Longer Studs?2019-09-23T02:22:18+00:00

BONOSS Replacement Method for BLS Wheel Spacer Longer Studs, As shown:

What should I do if the original stud length is greater than the BONOSS wheel spacer thickness?2019-09-23T02:27:32+00:00

As shown in Figure A: When the length of the original stud protruding from the upper surface of the brake disc is greater than the thickness of the spacer, the original stud will protrude from the spacer plane after installed the spacer. When this happens, we must confirm:
1. Generally speaking, there will be small cavities between the PCD holes of the wheel to make wheel light weight. If the position and depth of these small cavities can completely accommodate the protruding stud from the plane of the spacer, the stud will not touch the wheel. In case, spacer can be installed normally.
2. If the small cavity on the wheel is not in the right position, or the depth is not enough, or there is no small cavity, then the original car studs should be cut short to prevent the protruding studs touching the wheel.
Note: There must be no contact with the wheel after the stud protrudes from the spacer plane, which will affect driving safety.

How to confirm the torque of BONOSS extended bolts?2019-09-23T02:01:45+00:00

BONOSS extended bolts have higher grade and better performance than original bolts, so BONOSS extended bolt can withstand greater torque. Considering the different rims and thread pitch, we suggest to use the same torque that recommended by the car manufacturer.
Generally torque is shown as below:
M12x1.25: 113NM (83.3 Ft-tb)
M12x1.50: 113NM (83.3 Ft-tb)
M14x1.25: 140NM (103.5 Ft-tb)
M14x1.50: 140NM (103.5 Ft-tb)

Here are some tips of Safety Guidelines
(Minimum number of turns for wheel bolts / nuts):
M12 x 1.25 = 8.0 turns = approx. 10 mm of load bearing shaft length
M12 x 1.50 = 6.5 turns = approx. 10 mm of load bearing shaft length
M12 x 1.75 = 6.5 turns = approx. 12 mm of load bearing shaft length
M14 x 1.25 = 9.0 turns = approx. 12mm of load bearing shaft length
M14 x 1.50 = 7.5 turns = approx. 12 mm of load bearing shaft length
1/2″ UNF = 8.0 turns = approx. 11 mm of load bearing shaft length

What is the Material, Performance, Surface Treatment for Anti-Rust, Socket Selection and Tightening Torque of the matching Nuts?2019-09-24T01:40:26+00:00

The matching nuts of BONOSS wheel spacer are used to fix the wheel spacer to the hub axle and to tighten with the originial studs.
The material of the nuts are high-strength alloy steel, forged process, ISO898-6 grade 10 standard performance, the surface Anti-Rust of the nuts were tested by a neutral salt spray(NSS) of ISO 9227 for 500 hours. Please refer to the test reports of relevant third-party authoritative testing institutions TUV and SGS.
The nuts head dimension of the BONOSS wheel spacer are HEX19. Therefore, the HEX19 socket should be selected for installation. The tightening torque is different for different threads and specifications. Please refer to the following data:
M12x1.25: 113NM(83.3Ft-tb)
M12x1.5: 113NM(83.3Ft-tb)
M14x1.25: 140NM(103.5Ft-tb)
M14x1.5: 140NM(103.5Ft-tb)

What is the Material Performance, Surface Treatment for Anti-Rust, Socket Selection and Tightening Torque of the matching Studs/Bolts?2019-09-24T01:42:40+00:00

The material of the BONOSS wheel spacer studs/Bolts are high-strength alloy steel, forged process, ISO898-1 grade 12.9(partially grade 10.9) standard performance, the surface Anti-Rust of the studs were tested by a neutral salt spray(NSS) of ISO 9227 for 500 hours. Please refer to the test reports of relevant third-party authoritative testing institutions TUV and SGS.
Since the BONOSS studs have the same level or higher level of performance as the original studs/Bolts, the BONOSS extended studs can withstand greater tightening torques.
However, considering different wheels and original stud thread, we recommend using the torque recommended by the original car for locking.
In general, the tightening torque is as follows:
M12x1.25: 113NM(83.3Ft-tb)
M12x1.5: 113NM(83.3Ft-tb)
M14x1.25: 140NM(103.5Ft-tb)
M14x1.5: 140NM(103.5Ft-tb)

What about the grade and mechanical properties of BONOSS extended bolts?2019-09-23T02:01:52+00:00

What about the grade and mechanical properties of BONOSS extended bolts?
BONOSS extended bolts have 2 major grade for ISO898-1 standard, one is 10.9 grade, the other is 12.9 grade.
The key performance for 10.9 grade as follows:
The key performance for 12.9 grade as follows:
For detailed test reports of authoritative third-party testing organizations SGS and TUV, please check here.

What should I do if the supplied bolt’s heads are protruding from the wheel spacers upper surface?2019-09-23T02:48:05+00:00

In general, the BONOSS supplied bolts won’t be higher than the spacer upper surface, but this will happen in some special customization service situations. In general, our professional team members will contact you before this happens, and confirm whether you are satisfied with the installation conditions.

How about surface color and rust prevention of BONOSS extended bolts?2019-09-23T02:07:47+00:00

The surface color of BONOSS extended bolts is mainly environmentally friendly craft black, and the rust resistance is neutral salt spray test for more than 500 hours. Authoritative third-party testing organization SGS and
Detailed test reports of TUV please check here.

What should I do if the matching nuts are protruding from the spacer upper surface?2019-09-23T02:33:11+00:00

In general, the BONOSS matching nuts will not be higher than the spacer upper surface, but this will happen in some special customization service situations. In general, our professional team members will contact you before this happens, and confirm whether you are satisfied with the installation conditions.

What should I do if the original bolts are longer than the wheel spacer thickness?2019-09-23T02:48:52+00:00

In general,this problem does not occur, but this will happen in some special customization service situations. We will provide the speical short wheel bolts to you to solve this situation.

What is the maximum original hub height for BONOSS wheel spacers?2019-09-23T02:09:24+00:00

For different models have different heights of the original hub, our professional BONOSS team will give you proper advice.
It should be noted that when putting the BONOSS wheel spacer into the original hub, it must be confirmed that the BONOSS wheel spacer and the brake system can be completely fitted without any gap.

What is the minimum thickness of the customized BLM series wheel spacer?2019-09-23T02:33:41+00:00

The minimum thickness of the BONOSS customized BLM structure wheel spacer must meet the requirements of safe driving and mechanical structure design. Generally speaking, sedan cars are recommended to be above 15mm, SUVs are recommended to be above 20mm, and some off-road models are recommended to be more than 25mm. Our professional team members will give you professional advice.

What is the minimum thickness of the customized BONOSS BLA Series wheel spacer?2019-09-23T02:49:40+00:00

The minimum thickness of the BONOSS customized BLA structure wheel spacer must meet the requirements of safe driving and mechanical structure design. Generally speaking, we recommended to be above 25mm, if the thickness less than 25mm , it need the special design. Our professional team members will give you professional advice.

What is the minimum wheel chamfer for BONOSS wheel spacers?2019-09-23T02:09:17+00:00

Different wheel have different center bore, our professional BONOSS team will give you suitable suggest.
It should be noted that when putting the BONOSS wheel spacer into the original hub, it must be confirmed that the BONOSS wheel spacer and the brake system can be completely fitted without any gap.

How to get BONOSS extended bolt with proper seated?2019-09-22T10:15:46+00:00

BONOSS extended bolt have 60° cone seated, R12 ball seated, R13 ball seated, R14 ball seated and flat seated.
For OEM wheels, the seated of the extended bolt need to be the same as original bolts.
For after-market wheels, the seated of the extended bolt need to be the same as after-market wheel.