W124 - Using the correct wheel bolts

howzat1976

Senior Member
Joined
Jul 24, 2008
Messages
94
Reaction score
0
Location
Ealing
Your Mercedes
Old Skool
I have a 1992 W124 E300 24v

Hi, need some help selecting the right wheel bolts. Currently I was using 30mm (from the shoulder to the tip) but these are to small for the new rims. I tried 40mm they look good but only 20mm fit into the hub, is this enough or do I have to go longer?

Thanks

Vas
:mrgreen:

IMG_1976.JPG
 

wireman

Senior Member
Joined
Sep 20, 2005
Messages
2,632
Reaction score
3
Location
lancashire
Your Mercedes
nice 201 2.5D 1993 & very nice 129 SL500 1994
Do be very carefull especialy on the rear, it is easy for overlong wheel bolts to smash up the parking brake mechanism if the bolts protrude to far through the hub.
If the bolt end threads become damaged the rear hub flange may/will be destroyed when the bolts are removed, this makes it an expensive job.

To measure the required bolt length measure the thickness of your new wheels and add this length to the standard steel wheel bolts length - 3mm for the steels thickness, or measure the protrusion of a standard bolt through a standard wheel and find some that have this length of protrusion through your wheels.

Rotate each rear wheel at least one full turn whilst its still off the ground to make sure that its bolts are not catching on the brake spings etc.

You could measure the absolute maximum pentration length by installing one bolt into the rear hub and increasing its penetration untill it catches whilst being hand driven, try both sides just in case they differ slightly. Use bolts that have at least 3mm or so less protrusion than the measured maximum.
 
Last edited:
OP
H

howzat1976

Senior Member
Joined
Jul 24, 2008
Messages
94
Reaction score
0
Location
Ealing
Your Mercedes
Old Skool
  • Thread Starter
  • Thread starter
  • #3
Thanks, so if all is ok is 20mm of protrussion on all 5 bolts enough to hold the wheel. The reason I ask when I bought the car it already had after market wheels fitted.

Regards

Vas
 
Last edited:


Online parts website for Mercedes:www.partsformercedes-benz.com
Parts for Mercedes-Benz provides a wide choice of OEM (Original Mercedes), quality aftermarket and performance mercedes parts at competitive prices. Our clear, easy to use online store takes the headache out of having to search for that part or accessory you need, with a service that is second to none.
Top Bottom