Wheel bolt lengths..?

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Wheel bolt lengths..?
Topic Started: Mon Oct 27, 2008 7:17 pm (100 Views)
Karl1975	Mon Oct 27, 2008 7:17 pm Post #1
Newbie Posts: 43 Group: Members Member #2,692 Joined: June 1, 2008	Hi all have brought new rims DTM replicas and on fitting found that the rear bolts when fitted touch the handbrake system so would like to know what length are correct for the rears have brought genuine mercedes bolts they were to short so now have some bolts that are 50mm thread thats were the thread starts was going to cut these down to 45mm thread length any ideas would help.



CrysAk	Mon Oct 27, 2008 8:56 pm Post #2
Moar Bass! Posts: 5,048 Group: Members Member #456 Joined: August 14, 2006	39mm apprently been looking into this myself theres some on ebay for 8 - 15quid ... but MB do them at 2.50 each, so its better paying an extra 10er and getting all 16 from there imo (assuming you got locking nuts)



Sev	Tue Oct 28, 2008 7:33 am Post #3
No Longer a Registered Member Posts: 1,981 Group: Members Member #962 Joined: February 19, 2007	Karl1975 Mon Oct 27, 2008 7:17 pm Hi all have brought new rims DTM replicas and on fitting found that the rear bolts when fitted touch the handbrake system so would like to know what length are correct for the rears have brought genuine mercedes bolts they were to short so now have some bolts that are 50mm thread thats were the thread starts was going to cut these down to 45mm thread length any ideas would help. the length of lug bolt you need depends on the thickness of the hub combined with the offset of the wheel. there's no formula since wheel manufacturers don't specify hub thickness. you have to try different lug bolts. the size for stock wheels is 39mm for the shank of the lug bolt. but if you have another type of wheel, you may require a shorter lug bolt. an extremely short lug bolt would be for the clk wheels (modern version of bundt cake wheel),. something between that size and the 190e lug bolt would be the w116/w123 lug bolt for original bundt wheels. to test the lug bolts, with the car jacked up, spin the wheel to see if it hits the e-brake. if you're not sure, you can drive the car a short distance (20-30 meters) and if you hear a clicking sound, it's hitting the e-brake. the sound goes away if you slightly raise the e-brake handle a few centimeters



Sev	Tue Oct 28, 2008 7:35 am Post #4
No Longer a Registered Member Posts: 1,981 Group: Members Member #962 Joined: February 19, 2007	cutting down stock lug bolts is also an option, but before you cut them down, insert a nut onto the lug bolt, threaded in all the way. after you cut it down, remove the nut so that you ensure your bolt is threadable.



CrysAk	Tue Oct 28, 2008 10:17 am Post #5
Moar Bass! Posts: 5,048 Group: Members Member #456 Joined: August 14, 2006	just called up MB about this and they were shocked to hear 39mm O_o and recomneded 19/21 for alloys! surely thats for steels? i swear my amg reps have 39mmish bolts in Edited by CrysAk, Tue Oct 28, 2008 10:19 am.



CrysAk	Tue Oct 28, 2008 11:32 am Post #6
Moar Bass! Posts: 5,048 Group: Members Member #456 Joined: August 14, 2006	3.50 EACH!!!!! from mb lol 59 quid for 16 of em :/ fook that, im goibn to ebay but yea, they are 39mm length wise, although didnt get the width might need that lol edit - 1.5 Edited by CrysAk, Tue Oct 28, 2008 11:46 am.



Karl1975	Tue Oct 28, 2008 6:29 pm Post #7
Newbie Posts: 43 Group: Members Member #2,692 Joined: June 1, 2008	Well thanks for the info i took 5mm of each bolt and that seems to of done the trick no more clanking noise i tested each bolt and all seems fine.



Sev	Wed Oct 29, 2008 6:06 pm Post #8
No Longer a Registered Member Posts: 1,981 Group: Members Member #962 Joined: February 19, 2007	CrysAk Tue Oct 28, 2008 10:17 am just called up MB about this and they were shocked to hear 39mm O_o and recomneded 19/21 for alloys! surely thats for steels? i swear my amg reps have 39mmish bolts in steels have a thin hub, and require very short lug bolts. there are lug bolts for steel wheels, and that's what the CLK wheels use



CrysAk	Wed Oct 29, 2008 10:35 pm Post #9
Moar Bass! Posts: 5,048 Group: Members Member #456 Joined: August 14, 2006	yup got a call back and they said "err yea they are 39 mm" lol 50 quid for 16.... or another place got a price of 40 quid.. nothin in it really spose ill go with the MB ones...



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