Thread: D3 Rims on a Boat Trailer

Trailer hubs Commodore PCD and fitted with 14mm studs. I think there's a few threads on here. I don't know how the centering ring matches though.

There's a little bit more to correctly changing the rims fitted to trailers. You can buy adapter rings for the centre hub but the bigger concern is with the change in rim diameter. The lateral forces generated on the tyre when cornering greatly increased the load at the bearing/hub/stub axle area (basic lever arm concept). So if you look through say alko's (trailer component manufacturer) website you will see there is a a marked change in components when you go from 13" to 14" to 15/16" rims etc.

Thanks and I currently run D1 rims with a massive hub and bearings to match on a solid 50mm square axle.

I was kinda hoping there would be a swap over hub for the axle which would let me refurb the existing setup. I am aware the lateral forces are a killer for the larger diameter tyres. I have actually seen the results of up-sizing the rims on garden trailers a few times... mostly embarrassing... sometimes catastrophic.

I called Al-ko and it would seem that ~$450 should sort it out. Includes the possible need for a new axle to match the new bearings etc.

First step is to buy some D3 rims and tyres then get the new dimensions.

Thanks for your help guys.

I had plans to replace the 14" rims on my small van with D3 rims (17" X5 rims actually) and 12" brakes but the pcd is too small for the HD hubs that are req'd for 12" brakes. According to the Vehicle Components catalogue 10" brakes with 790mm tyres are only good for 1.4T yet a 50mm sq axle & SL bearings with 790mm tyres is good for 1.6T, but that is still less than the 1.8-2.0T I'd like. I intend investigating if its posible to do a 120mm pcd HD hub in case the limiting factor is the Commodore rim's centre hole not being large enough to fit over the HD hub. I have been advised by 1 trailer parts supplier that the HD hubs cannot be drilled for 120mm pcd but perhaps a special order is possible.

Check with bodzed57 after he has his issues on his Cape York trip sorted http://www.aulro.com/afvb/d3-d4-rrs/...-flashing.html

Before leaving on his trip he had his camper trailer converted to take D3 wheels and I believe had its brake drums changed as well.

Garry

Originally Posted by Graeme

I had plans to replace the 14" rims on my small van with D3 rims (17" X5 rims actually) and 12" brakes but the pcd is too small for the HD hubs that are req'd for 12" brakes. According to the Vehicle Components catalogue 10" brakes with 790mm tyres are only good for 1.4T yet a 50mm sq axle & SL bearings with 790mm tyres is good for 1.6T, but that is still less than the 1.8-2.0T I'd like. I intend investigating if its posible to do a 120mm pcd HD hub in case the limiting factor is the Commodore rim's centre hole not being large enough to fit over the HD hub. I have been advised by 1 trailer parts supplier that the HD hubs cannot be drilled for 120mm pcd but perhaps a special order is possible.

Track Trailer (I think it was the Brisbane outlet) have built trailer hubs to fit the 18" rims I supply, so it's certainly possible. It took a while to do the first time, no doubt they could do it better 2nd time around.

Cheers,

Gordon

Originally Posted by Graeme

HD hubs cannot be drilled for 120mm pcd but perhaps a special order is possible.

Naaaaah... Don't drill a wheel. Sounds like too much paperwork "in the unlikely event of an accident" etc.

Drill the hubs to a particular pattern instead of the more popular patterns, not drilling the rims.