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Old 05 January 2013, 15:11   #1
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Bigger wheels for trailer.

I have a Indespension roller coaster 1 unbraked trailer with 145 R12 wheels. I would like to fit bigger wheels on the trailer but when I phoned a local dealer a young lad on the other end of the phone told me that I couldn't.

Is he right ? or...

Is it possible to go for a bigger wheel that has the same spaced holes to go over the studs.

Thanks, K.
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Old 05 January 2013, 15:18   #2
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Quote:
Originally Posted by kerny
I have a Indespension roller coaster 1 unbraked trailer with 145 R12 wheels. I would like to fit bigger wheels on the trailer but when I phoned a local dealer a young lad on the other end of the phone told me that I couldn't.

Is he right ? or...

Is it possible to go for a bigger wheel that has the same spaced holes to go over the studs.

Thanks, K.
I am going from 10 to 13 go to Indespension
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Old 05 January 2013, 15:27   #3
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I am going from 10 to 13 go to Indespension
I did do.
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Old 05 January 2013, 15:42   #4
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He may have got confused about the question. Your original wheels are likely to be Smiths rims, which aren't manufactured anymore. Maybe I'm being generous...

All you need to do is measure your PCD (likely 4 x 7/16" studs on a 4" PCD) and then look for a 13" wheel (I'm guessing that size you're looking to upgrade to?) with matching PCD and ensure you've the mudguard clearance and offset to accomodate the change.

Though, to be honest, I can't remember the last time I saw a 13" wheel with a 4" PCD, so deffo measure that.

All the best
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Old 05 January 2013, 15:56   #5
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Quote:
Originally Posted by Trailer Guy View Post
He may have got confused about the question. Your original wheels are likely to be Smiths rims, which aren't manufactured anymore. Maybe I'm being generous...

All you need to do is measure your PCD (likely 4 x 7/16" studs on a 4" PCD) and then look for a 13" wheel (I'm guessing that size you're looking to upgrade to?) with matching PCD and ensure you've the mudguard clearance and offset to accomodate the change.

Though, to be honest, I can't remember the last time I saw a 13" wheel with a 4" PCD, so deffo measure that.

All the best
Thanks TG, my trailer is only just over a year old, yes I was thinking of going up to 13", I have got plenty mudguard clearance and the distance between holes on the wheel looks to be 3" not 4"
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Old 05 January 2013, 16:03   #6
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Make sure you're not measuring adjacent bolts, rather than opposing ones.

Have a shoofty here: Trailer & Towing info - mods to make sticky!

if you're unsure on how to measure a PCD.

If it's a newer trailer, the wheels will be different to the SMiths ones, so definitely check that dimension and the wheel stud size (likely either 3/8" or 7/16" I'd have thought)

There's plenty of 13" on 100mm, but not on 4" (101.6mm)
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Old 05 January 2013, 16:09   #7
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Take the hub off and take it to the shop
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Old 05 January 2013, 16:13   #8
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smarty pants
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Old 05 January 2013, 16:18   #9
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Quote:
Originally Posted by Trailer Guy View Post
Make sure you're not measuring adjacent bolts, rather than opposing ones.

Have a shoofty here: Trailer & Towing info - mods to make sticky!

if you're unsure on how to measure a PCD.

If it's a newer trailer, the wheels will be different to the SMiths ones, so definitely check that dimension and the wheel stud size (likely either 3/8" or 7/16" I'd have thought)

There's plenty of 13" on 100mm, but not on 4" (101.6mm)
That drawing makes more sense thanks TG it looks more like 100mm than 4" Not sure of diameter as it's dark outside but if my measurements are right then I presume I could go for the 13" wheels then.
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Old 05 January 2013, 16:25   #10
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Yup, but don't forget there's only 1.6mm between the two PCDs and I can guarantee that the 100mm won't fit on a 4" hub. Also, the stud size is important too.

Indespension should know what hubs are fitted, to your trailer, straight off the top of their heads.

Or, as Mick pointed out, take a hub in to be measured.
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