Boring out rims

[2017Bimmer35D]

I have 4 BMW rims that came off of a totaled X3.
The center bore on these rims are 72mm and i was thinking maybe i could use these on my X5. The X5 has a center bore of 74mm.

So how crucial is the clearance? Does it need to be a tight fit or does it just ride on the center hub? The bolt patterns line up, just the center bore is off by 2mm.

Thanks

[jiggz]

You should probably Google hub centric rings.

Also, I'd pay close attention to the wheel spec (diameter, but more importantly width and offset) - X3 wheels will likely look goofy on an X5, too small & too sunken inside the wheel well.

[1norseman]

Originally Posted by 2017Bimmer35D

I have 4 BMW rims that came off of a totaled X3.
The center bore on these rims are 72mm and i was thinking maybe i could use these on my X5. The X5 has a center bore of 74mm.

So how crucial is the clearance? Does it need to be a tight fit or does it just ride on the center hub? The bolt patterns line up, just the center bore is off by 2mm.

Thanks

Yes, needs to have a tight fit, be hub centric, or you risk vibrations.
Find a shop that knows what they are doing, and have done it before.

Also, I'm thinking the X3 wheels should have no problem with the extra weight, but some wheels are not made to handle the extra weight of a heavier vehicle.
Better check before you spend money on boring them out. What is the weight difference between the vehicles?

Lastly, do you know if the offsets are correct?
If you need spacers to push them out a bit, there might be spacers made to fit the 72.6?mm wheel, and the 74.1mm hub on the F15.

Personally I would not jump on using wheels from a different series BMW, just because I'm not sure they can handle the weight. I do have a set of E71 wheels for my F15 (winter use), I had the rears bored out by a shop that had done it before, and they work/fit great.

[RED_Y_]

I don't know if its really worth it, keep in mind that rim width is also different on X3.

[2017Bimmer35D]

Thanks for the info..

Both the X3 and X5 are sitting on 19" rims. The only difference between them are the smaller tires on the X3 rims (245/45 instead of 255/50) and the bore size.
When i put the tires side by side there isnt much of a different between them.

So the weight difference between the 2 are:
X3 - 4230 lbs
X5 - 4930 lbs
Both vehicles were diesels.
I checked the hub on the x5 and its 74.1mm and the x3 rims are 72.6mm in the center.

I cant see the weight limit between these rims being an issue.
the X3 has a payload of 910 lbs.
the x5 has a payload of 1100 lbs
And the overall weight of both vehicles are within a few hundred pounds.

Maybe it might be best to find some spacers before i get something done that may or may not work lol.
But on second thought ill pull a rim off my x5 and confirm the offset between the 2 rims and see if its absolutely going to work.

I really dont want a goofy looking vehicle lol

[RED_Y_]

I sold my OEM 19" rims for $600, many owners go to 20",21" or even 22". So may be check FB marketplace for set of rims, might be faster and cheaper then boring out the X3 set.

[Vivek.]

IMO not worth it. Look for a step-down hubcentric spacer (there are many options since BMW has gone with 57.1mm, 72.56, and 74.1mm hub diameters over the years) as it'll be cheaper and easier with less potential issues.

[Breakmywalletf15]

I did mine. Wheels were from an e7x X5m. No issues. These cars are very finicky with wheels though, they need to be precise.

Also, to find a hubcentric spacer that adjusts to the hub bore is easier said than done. They are usually about an inch thick at least. It's a big spacer, if your car needs it then great.

I purchased some and then decided to just rebore them. Was only charged $125 for all

[lonestar22]

You'll need spacers so big that you may as well get spacers with a smaller hub bore on the outer side that the inner side. Either way it's going to look like crap

[Vivek.]

Originally Posted by lonestar22

You'll need spacers so big that you may as well get spacers with a smaller hub bore on the outer side that the inner side. Either way it's going to look like crap

In theory the spacer only needs to be as thick as the distance hub protrudes from the rotor...maybe 7mm or so. Now if anyone actually makes them in that size, I'm not sure.