Thread: Expert Advice Needed - 19" D4 rims to fit Campertrailer possible?

Seeings you're in Perth I can't offer much help, but my Father has done quite a few for Range Rover sports and Disco 2's, I'll tell you this, it can and has been done with those hubs (they have the big outer bearing), the "outer bearing housing" (for want of a better word) that comes out from the hub flange has to be turned down to the size of the spigot that the alloy wheel locates on, it needs a wheel spacer of ~16mm IIRC (use longer studs) and then it will possibly need a different centre cap.
Then it all fits, it's not cheap though!!
And you need to buy blank hubs and have them drilled to suit.
I don't know what the legalities of spacers on trailers is, but with longer studs there is still many different components that would fail first!!

Cheers
Will

I fitted HD 10" electric brake hubs to my van to take BMW X5 or LR rims. The LR rims will need a spacer but load-wise its not an issue because they're needed only because of the extra positive offset than the rims normally used with these hubs.
http://www.aulro.com/afvb/trailers-v...ml#post1853860

Thanks Graeme and Will,

Really appreciate the knowledge that you and the other members have and your willingness to share it.

A few more questions after reading your posts and links:

1. Just would like to clarify that there is enough "meat" left around the bearing housing after it is machined, to handle the load of my trailer?

2. Am I right in my understanding that you saying that I can use the existing axles, get a suitable new hub machined and then only require a 16mm spacer to maintain the same "track" width of the trailer?

3. Does this extra spacer, effectively increasing the axle length, place too much leverage on the existing axle?

4. Is there an achievable solution to purchasing a suitable grease cap?

Sorry if I'm asking too many questions, but you guys have given me a glimmer of hope. The trailer spares "experts" I have consulted have all pointed out issues in relation to the above questions as to why it is not going to be achievable.

Thanks again
Dave

1. The machinist who did mine thought there should be plenty but that's just one opinion.

2. How does the offset of the existing rims compare with 53-16 (37) mm for LR rims with 16mm spacers? If not too much more, do the tyres on LR rims buldge as much as the existing rims to sufficiently increase the chassis to tyre gap? My van tyres have only 10-12mm but with wide springs and a wide axle the tyres can't move sideways enough to touch.

3. Increased rim mounting face offset offsets extra leverage caused by spacers. Whether there's more or less leverage depends on the difference in offsets and spacer width.

4. Whilst a standard hubcap fits over the axle nut, I doubt it will provide clearance for the split-pin. Hence the normal HD cap will need to be fitted, which I suspect (but not tried) requires more than a 10mm spacer. I can check LR rims on mine in the next day or so to determine the minimum spacer although I would chamfer the edge of the hubs so that less spacer is required.

Thanks Graeme,

I will try and take some measurements tomorrow of the existing offset.

Does anyone know if this work could be carried out in Perth?

Thanks
Dave.

Just out of interest, have the GOE rims got a larger centre bore, or is it the same as the standard 19" land rover rims?

Thanks
Dave

I only know that the GOE rims take the standard LR hub cap but nothing about their internal dimensions apart from having the same register diameter. The GOE rims may have a different offset to LR and may have a different centre hole depth. The original version of those rims (Compomotive) had a 43mm offset rather than 53 when used on earlier RRSs.

Edit: Comparing pictures of a LR rim and a design image for the GOE rim I suspect the GOE rim's centre hole is shallower than LR, thus requiring an even thicker spacer to clear the bearing cap. Unfortunately for trailer use the large centre hole of the Compomotive rim was not retained for the GOE rim, favouring original LR cap fitment. Note that the picture on the GOE web-site is the original Compomotive rim which has the large centre cap hole.

Originally Posted by Heavyduty

Thanks Graeme and Will,

Really appreciate the knowledge that you and the other members have and your willingness to share it.

A few more questions after reading your posts and links:

1. Just would like to clarify that there is enough "meat" left around the bearing housing after it is machined, to handle the load of my trailer?

2. Am I right in my understanding that you saying that I can use the existing axles, get a suitable new hub machined and then only require a 16mm spacer to maintain the same "track" width of the trailer?

3. Does this extra spacer, effectively increasing the axle length, place too much leverage on the existing axle?

4. Is there an achievable solution to purchasing a suitable grease cap?

Sorry if I'm asking too many questions, but you guys have given me a glimmer of hope. The trailer spares "experts" I have consulted have all pointed out issues in relation to the above questions as to why it is not going to be achievable.

Thanks again
Dave

1. Yes there was very little machines off at all, on some of the hubs it was only even cleaning up the casting to square!!

2. Depends on the offset of your original wheels, I think the minimum spacer we've used is 12mm

3. No (not going into engineering calculations here though!)

4. Only the 12mm spaced wheels needed the grease cap modifying, it was just cut down about 10mm in height I believe

As for it being done in Perth, all you need is a good fitter and turner to do the job, someone that does one-off jobs and gets paid in beer is the best