Thread: Legality of aftermarket 17" rims for D3

Update. Today I saw the revised BB-6s, and tested them; 10 turns to tighten, so that's one more turn than the stock rim. Within limits. They have bevelled the nut and rim so it goes further into the rim, as opposed to simply making the backplate thinner.

However, that particular set of rims were at a 38mm offset and with a copy of VSI8 I explained that that gave a track increase of greater than the legal limit of 25mm. Now awaiting a set that has the correct offset, AND the correct nut engagement.

New set will have a 42mm offset, so 53-42 = 11 x 2 = 22mm increase in track, within the 25mm limit.

All good...

Thanks for keeping us posted rmp.

Cheers

I've found some tapered nuts with correct length shanks to give the extra threads for the BMW rims. The nuts are longer than needed, protruding from the rim like D2 nuts so the supplier is checking if shorter ones are available.

Dumb question... what is the offset actually measuring? Offset from what?

Originally Posted by Graeme

I've found some tapered nuts with correct length shanks to give the extra threads for the BMW rims. The nuts are longer than needed, protruding from the rim like D2 nuts so the supplier is checking if shorter ones are available.

Hi Graeme,
I'd be interested in the outcome of your search.

I have 4x BMW rims stored down in Melbourne, awaiting collection. I have heard that the BMW boss hole is larger than that for the LR rims and so they can't be centred on the boss. Is this your experience? If so, using "centring" nuts would be important.

Best Wishes,
Peter

Originally Posted by djhampson

Dumb question... what is the offset actually measuring? Offset from what?

It's the offset of the centre of the rim (where it bolts to the hub) from an imaginary line down the exact centre of the rim.

Hi Bushwanderer,

The nuts are Topline ET style conical nuts in 14mm x 1.5 pitch and available from Antique Tyres in Melbourne, the Oz agent for Topline nuts. There's a possibility that the rim holes will need enlarging to fit the shank. They are 60mm total length.

I haven't tried them on the D4 yet due to the calipers but I understood the centering hole was the correct size. As fitted to the X5, the centering hole is used although it uses bolts, not nuts. I'll be trying one on both front and rear soon after temporarily removing the calipers to check clearance for the rear caliper bracket (might not haveto get 2.7 rear brackets) and both stone guards so will post my findings. Several D3 owners have fitted them using just the too-short cone nuts without centering rings.