Changing wheel size

Kernow Buoy · 22 March 2008, 19:40

For a couple of reasons I'd like to put a slightly larger wheel on my trailer, presently I have a 10" wheel with a 4" P.C.D. I can't find any wheels larger than 10" that have a 4" P.C.D. they seem to go straight to 100mm and upwards.
Changing hubs is too expensive (braked) and I did wonder about some sort of stud adapter, any thoughts or suggestions?

David G · 22 March 2008, 19:49

Just did a quick search:

http://www.rphleisure.co.uk/php/cata...19322e61ee5747

http://www.trailertek.com/acatalog/12_inch_rims.html top one on this page

Don't know whether the other specs are compatible though.

I'm sure there are more too!

Regards,

Orve

doggypaddle · 22 March 2008, 19:54

arent minis on a 4"pcd? which would mean most BL cars were.
metro uses 12" wheels and possibly maestro van /marina van would be the same with a 13 " wheel?
i am not recomending it but i know some people mix 100mm and 4" pcd up and seem to get away with it. if i did it all the wheel nuts would come loose and the wheel fall off!!

bogib · 22 March 2008, 19:58

American´s are the ones still using 4" over here loads of 12" 4 lug 4" rims available, also 13" rims can be found (lot of American folding campers beeing imported to Iceland over the years, also we import boat trailers on 12" rims)

Bogi

doggypaddle · 22 March 2008, 20:00

Hilman imp and most vauxhalls, nova etc are also 4"PCD

Kernow Buoy · 22 March 2008, 20:46

Thanks guys, one thing I forgot to mention was I need a wheel with holes in! I have a good wheel clamp which fixed through the holes.

ian parkes · 23 March 2008, 00:16

may be worth trying a 100mm pcd wheel , there is less than 2mm difference between 4" and 100mm.
Would you also need to change mudguards ?

Kernow Buoy · 23 March 2008, 13:11

Quote:

Originally Posted by ian parkes

may be worth trying a 100mm pcd wheel , there is less than 2mm difference between 4" and 100mm.
Would you also need to change mudguards ?

Hadn't even considered that, no mudguards are well clear.

ashbypower · 23 March 2008, 13:16

Another thing to consider it the Centre Hole, Some trailer wheels have a larger hole in the centre to clear the Hub.

doggypaddle · 23 March 2008, 17:05

Quote:

Originally Posted by ian parkes

may be worth trying a 100mm pcd wheel , there is less than 2mm difference between 4" and 100mm.
Would you also need to change mudguards ?

yes they will certainly fit but it will bend the studs slightly and put uneven force on the taper which locks the nut.
it will work for long enough for you to forget about it, then the wheelnuts will work loose and the wheel will fall off!

bedajim · 23 March 2008, 17:43

I,d laser cut 4 spacers with holes to suit the old drum and the new wheels

James

Kernow Buoy · 02 April 2008, 13:24

"Wobble nuts"

Never heard of them myself but this is what they claim to do

"These nuts have been designed with a floating washer attached, which can move approximately 1-1.5mm in a 360 degree circumference. This allows a wheel of correct centre bore size (hub centric) to fit several different PCD applications whilst still keeping the nut centralised and parallel within the recess pocket of the wheel avoiding cross threading the stud. Also known as wobble nuts. "

Can't think the floating washer would float for very long when exposed to sea water, anyone know of/used them?

http://http://www.priracing.com/product.php?xProd=1160

ian parkes · 02 April 2008, 22:29

Sounds like the sort of wheel nuts you used to get with alloy wheels back in the "cortina" days .
The days when if it fitted "sort of" it was ok and you checked your wheelnuts were tight every week .

ian parkes · 02 April 2008, 22:36

sorry Just saw the link and had a look . yes that is what was and probably still is used .
I would go for it , they are cheap enut

Kernow Buoy · 02 April 2008, 23:03

Quote:

Originally Posted by ian parkes

Sounds like the sort of wheel nuts you used to get with alloy wheels back in the "cortina" days .

Cortina ?

No sorry Ian way before my time.

jwalker · 02 April 2008, 23:07

This is from the dim and distant past but I've a feeling the taper is a different angle on metric and imperial wheels. I could easily be wrong but it's worth a wee check.

I think I may have one of each type somewhere. I'll check tomorrow, if I remember.

Edit: I remembered where they are and just had a look. This is for two 10" wheels one with 4" PCD and the other with 100mm PCD. They are very different. The 4" wheels appear to have stud holes sized for 3/8" or 7/16" clearance so about 10 or 11mm dia. The 100mm wheel has stud hole of 15mm dia and a steep taper. I guess these are meant to fit M12 studs. I'd bet the nut for the 4" wheels would go through the hole of the 100mm and maybe bottom out against the hub before they properly tightened the wheel. They would also contact on only a limited part of the taper because of its larger diameter. These wobble nut things would need to be substantially larger diameter than the standard nut for a 4" wheel.

ian parkes · 02 April 2008, 23:18

Quote:

Originally Posted by Kernow

Cortina ?

No sorry Ian way before my time.

sorry I meant Land rover

9D280 · 03 April 2008, 11:09

DON'T EVER put metric PCD wheels on imperial sized studs or vice versa. Yes, they look like they'll fit, but as mentioned above, it will all end in tears....... The cyclic forces on a wheel are a lot bigger than you might think, and at 10" / 50mph the half ton or so force (plus the dynamic loads of potholes etc which will make the half ton deadweight look like a stroll) is cycling round the nuts 30 times each second. Just don't mess with wheel fixings!

One to investigate is the wheels on the Indispension "Vario" Jetski trailer. I had one of them under my SR, and it was fitted with 13" wheels. I forget the PCD, but I remember having to buy the spare wheel for that trailer simply becuase none of the other 13" wheels I could find would fit. Now, seeing as most 13" wheels either have either 5.5" PCD or a metric PCD, you might find this will fit as it is a slightly obscure combo of sizes.

Apologies I can't be more definite at the moment - it is but a distant memory.

ian parkes · 03 April 2008, 22:08

Here You Go Kernow
From indispension , I hope the price is for wheel and tyre

Part No:WT099
WHEEL 155R12 WR047 4X7/16 101.6PCD

DavyBuoy · 04 April 2008, 10:01

Quote:

Originally Posted by Kernow

For a couple of reasons I'd like to put a slightly larger wheel on my trailer, presently I have a 10" wheel with a 4" P.C.D. I can't find any wheels larger than 10" that have a 4" P.C.D. they seem to go straight to 100mm and upwards.
Changing hubs is too expensive (braked) and I did wonder about some sort of stud adapter, any thoughts or suggestions?

Hi,
Have a couple of 13"alloy Ginetta wheels with a 4" PCD going spare.The tyres are just legal and one of the centre caps is missing but they are in good nick.Also come with eight chrome spigot wheel nuts.They were put on Ebay last night but if you want them give me a call on 07767 702104.
Dave