|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
5mm spacer - safety concern
|
|
04-30-2017, 08:08 AM | #1 |
Second Lieutenant
25
Rep 202
Posts |
5mm spacer - safety concern
After having further reading about spacers, I have got a question for 5mm or 8mm spacers which doesn't have a lip.
OEM lip is around 12.5mm depth Using 5mm spacer will have 7mm lip left for the rim to rest on. Most rims have a beveled edge on the mounting surface. So, depending on how depth the beveled edge is, the OEM lip may only have very minimal contact surface to the rim. Eg, If rim beveled edge 4mm depth The rim is only resting on 3mm lip (12mm - 5mm spacer - 4mm beveled edge) which is not safe and as lots of people said - vibrating ride, or worst case the wheel comes off the car during drive Hub extender is only for the front wheel, so, what could be the solution for the rear wheel apart from going to 10mm or above spacers which have a hubcentric lip? How much lip should the rims be rest on to be considered safe or adequate? 4-5mm? For those who are using 5mm spacers, do you notice anything during drive or when mounting the rims on the hub (feel like the rims are not rest steadily on the OEM lip before putting the bolts)? As someone said, "This is a safety precaution, you dont want to feel the ass end of your car drop and see your Vossen pass your ass on the highway at 80mph." Like this: |
05-01-2017, 05:21 PM | #2 |
Brigadier General
541
Rep 3,131
Posts
Drives: 2011 335i e92 DCT
Join Date: Sep 2015
Location: Australia, NSW
|
I'll have to measure mine, I have 5mm at the front at the moment, BMS spacers.
Thinking of getting larger ones soon. |
Appreciate
0
|
05-01-2017, 11:01 PM | #3 |
Major General
898
Rep 6,285
Posts |
Why bother with a 5mm slip on spacer?
I fitted a BBK to a previous car and the wheel spoke just snagged on the caliper and I had to run a small slip on spacer. In summary if you're adding a 5mm spacer for aesthetics maybe dont bother if you need it for clearance you should be fine. |
Appreciate
0
|
05-01-2017, 11:15 PM | #4 | |
Second Lieutenant
25
Rep 202
Posts |
Quote:
I could still see extended bolts are needed for 5mm spacers though, agree? |
|
Appreciate
0
|
05-02-2017, 08:10 AM | #5 |
Major General
898
Rep 6,285
Posts |
No 5mm wont cause your rim to fall off... Ideally some longer bolts would be nice but IMO just fit up a stud kit o that way you can just use regular studs and wheel nuts.
|
Appreciate
0
|
05-02-2017, 08:35 AM | #6 | |
Lieutenant
113
Rep 410
Posts |
Quote:
Additionally BMS and ECS also highlight that the spacer thickness increase should also be equivalent to the fastener length increase. Prudent Design Engineering advice. Also no grease or anti-seize should be used on any mating face. |
|
Appreciate
0
|
05-02-2017, 05:46 PM | #7 |
Major
112
Rep 1,140
Posts
Drives: N54 135i 6MT
Join Date: Aug 2014
Location: Sydney, Australia
|
Ideally you need turner motorsport hub extenders
|
Appreciate
0
|
05-02-2017, 07:23 PM | #9 |
Second Lieutenant
25
Rep 202
Posts |
Hub extender is only suitable for front hub.
I will measure how deep the chamfered edge at the back of the rim and work out how much lip will the rim be sitting on. If it will be sitting on 5-6mm, it should be ok, hopefully. |
Appreciate
0
|
05-03-2017, 03:41 AM | #10 |
Lieutenant
113
Rep 410
Posts |
|
Appreciate
1
Banana Clipper329.50 |
05-03-2017, 11:42 PM | #11 |
Captain
97
Rep 809
Posts
Drives: E91 335i, B5 RS4, F31 330i
Join Date: Jun 2014
Location: Sydney, Australia
|
I have 5mm spacers on the front of my car from Advan with longer bolts. Works fine and adds a little bit of stance.
Still plenty of lip/hub for the wheel. |
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|