I just had a weird thought about wheel bolt lengths.
When spacers get bought and sold on here, everyone rightly states they need to use longer wheel bolts equivalent to the thickness of the spacers.
Why is there no recommendations around bolt lengths when different wheels are sold?
Are ALL wheels the same thickness at the bolt holes?
I was thinking about some aftermarket wheels and realised I have no idea whether that part of the wheel is thicker or not and whether I’d need new bolts.
Any wisdom?
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Standard wheel thicknesses
- Darkangelv2
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Standard wheel thicknesses
BMW Z4 2006 2.5SI - 437M Wheels - Strut Brace - H&R ARBs
3.0si Brake Conversion - Custom Nappa Sport Interior - Z4M Bumper+Bonnet -
BC Racing BR Coilovers - AFE Stage 2
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BC Racing BR Coilovers - AFE Stage 2
- NickDE
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Standard wheel thicknesses
I don't really know but I expect BMW wheels would all deliberately have the same thickness to avoid having to stock different length bolts at the factory.
Darkness gone, go Darknes2, go Frozen, go Tronic
- kis
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Standard wheel thicknesses
Had a quick realoem lol
Seems to list most models with the same part number. So as mentioned I think it’s a standard size.
Seems to list most models with the same part number. So as mentioned I think it’s a standard size.
My E85 Z4 3.0i SMG
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
- Darkangelv2
- Senior Member
- Posts: 1277
- Joined: Fri Apr 10, 2015 1:20 pm
- Location: Southampton
Standard wheel thicknesses
What about aftermarket wheels? Do they make any statements regarding their thicknesses or length of bolts required?
BMW Z4 2006 2.5SI - 437M Wheels - Strut Brace - H&R ARBs
3.0si Brake Conversion - Custom Nappa Sport Interior - Z4M Bumper+Bonnet -
BC Racing BR Coilovers - AFE Stage 2
3.0si Brake Conversion - Custom Nappa Sport Interior - Z4M Bumper+Bonnet -
BC Racing BR Coilovers - AFE Stage 2
-
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Standard wheel thicknesses
Isn't it the thickness at the centre that gives the offset?
Or is it the distance from the centre to the outside edge?
Good question OP.
Or is it the distance from the centre to the outside edge?
Good question OP.
- Darkangelv2
- Senior Member
- Posts: 1277
- Joined: Fri Apr 10, 2015 1:20 pm
- Location: Southampton
Standard wheel thicknesses
Offset is the latter. It’s the number of MM difference of the hub face from the wheel centre.
I just realised I could sleep walk into having bolts that are too short when buying a new set of wheels. But then also realised I couldn’t remember reading anyone else doing this. Just seemed weird to me.
BMW Z4 2006 2.5SI - 437M Wheels - Strut Brace - H&R ARBs
3.0si Brake Conversion - Custom Nappa Sport Interior - Z4M Bumper+Bonnet -
BC Racing BR Coilovers - AFE Stage 2
3.0si Brake Conversion - Custom Nappa Sport Interior - Z4M Bumper+Bonnet -
BC Racing BR Coilovers - AFE Stage 2