bad quality bolts?

drymite · 12-25-2022, 03:42 PM

I was installing 15mm spacers on my e90 i did this install on 3 different e90s before with no problem at all except for yesterday i installed 3/4 sides torqued down to spec. On the last wheel which was my rear left the bolt started stripping .. is this a installation error on my side or just cheap bolts ... the threading in my hub is still good.

335i54n · 12-25-2022, 08:40 PM

a lot looks wrong, wrong taper, bolts too short, and there a reason OE never have chrome coated threads.

drymite · 12-25-2022, 10:42 PM

Damn i did not know there was this much wrong. I bought these at tire and rim shop... and im running 15mm spacers . Do you know the exact spec i need and do you have any clue where i can purchase quality bolts?

335i54n · 12-26-2022, 01:08 AM

i assumed since bolt stripped at tip it was too short, oe is 26mm + 15m, so it was close close in length but wrong taper seat. as long as it a 10.9 grade bolt you should be fine even if you want to use chrome lugs. i have been using turner lugs (black) as they seem to have a more durable coating (other ebay 10.9 start to rust).

https://www.turnermotorsport.com/p-3...minis/?pdk=CwE

whyzee125 · 01-19-2023, 10:57 PM

I'd just get a set of quality studs and nuts from somewhere like apex, turner, motorsport hardware, etc. You can run them with or without spacers and some say it's a little easier to mount the wheels with these vs the bolts (I think it's the same). but that way you know it's good quality stuff.

12-25-2022, 03:42 PM	#1
drymite Second Lieutenant 30 Rep 210 Posts Drives: 06 330i/06 323i/09 323i/07 335 Join Date: Oct 2020 Location: toronto iTrader: (0)	bad quality bolts? I was installing 15mm spacers on my e90 i did this install on 3 different e90s before with no problem at all except for yesterday i installed 3/4 sides torqued down to spec. On the last wheel which was my rear left the bolt started stripping .. is this a installation error on my side or just cheap bolts ... the threading in my hub is still good. Attached Images
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12-25-2022, 08:40 PM	#2
335i54n Lieutenant 295 Rep 521 Posts Drives: e90 335i, e39 m5 Join Date: Nov 2020 Location: socal iTrader: (0)	a lot looks wrong, wrong taper, bolts too short, and there a reason OE never have chrome coated threads.
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12-25-2022, 10:42 PM	#3
drymite Second Lieutenant 30 Rep 210 Posts Drives: 06 330i/06 323i/09 323i/07 335 Join Date: Oct 2020 Location: toronto iTrader: (0)	Damn i did not know there was this much wrong. I bought these at tire and rim shop... and im running 15mm spacers . Do you know the exact spec i need and do you have any clue where i can purchase quality bolts? Attached Images
	Appreciate 0 Quote

12-26-2022, 01:08 AM	#4
335i54n Lieutenant 295 Rep 521 Posts Drives: e90 335i, e39 m5 Join Date: Nov 2020 Location: socal iTrader: (0)	i assumed since bolt stripped at tip it was too short, oe is 26mm + 15m, so it was close close in length but wrong taper seat. as long as it a 10.9 grade bolt you should be fine even if you want to use chrome lugs. i have been using turner lugs (black) as they seem to have a more durable coating (other ebay 10.9 start to rust). https://www.turnermotorsport.com/p-3...minis/?pdk=CwE
	Appreciate 1 drymite29.50 Quote

01-19-2023, 10:57 PM	#5
whyzee125 Brigadier General 1679 Rep 3,645 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	I'd just get a set of quality studs and nuts from somewhere like apex, turner, motorsport hardware, etc. You can run them with or without spacers and some say it's a little easier to mount the wheels with these vs the bolts (I think it's the same). but that way you know it's good quality stuff.
	Appreciate 0 Quote