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Spitfire 1500 steel wheels


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Hi,

 

I have acquired five steel wheels which I believe are an original set. However 3 are marked up with the Dunlop symbol followed by 957 and the other two have no symbol but are marked up LP957

The wheels look identical but would anyone know the difference between the markings?

Many thanks,

James

 

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If they are late 1500 Spit wheels they should be marked 5J x 13" on front face. This means they are 5" wide by 13" diameter. Mk4 Spit and very early 1500 ( I believe) Spit wheels were 4.5J x 13" . They are interchangeable as a straight swap BUT you must have the same width rims fitted all round.

The difference in the Dunlop number is possibly different batch/factory ?

Gav

 

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You had me excited there - the 5Jx13 wheels must be the rarest wheels on the planet!

I've found several 5.5Jx13 wheels with the required 16mm offset, but I can't find the later 1500 wheels anywhere.

I see that your LP wheels do not have the Dunlop logo next to the 957.  I'd think they are 957s made by someone else to Dunlop spec - subcontractor, maybe?

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On 07/02/2021 at 13:54, Roger K said:

You had me excited there - the 5Jx13 wheels must be the rarest wheels on the planet!

I've found several 5.5Jx13 wheels with the required 16mm offset, but I can't find the later 1500 wheels anywhere.

I see that your LP wheels do not have the Dunlop logo next to the 957.  I'd think they are 957s made by someone else to Dunlop spec - subcontractor, maybe?

So the "correct " offset on 5.5J is 16mm? What is it for 5J? Always thought 4.5J were 20? 22mm offset?

Cheers,

Iain.

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This is one for the connosieur!

They are all proper Dunlop wheels but the pressing varied ever so slightly over the years from 1970 to 1980. If you look carefully at the shoulder of the oval holes you will see they differ. The early one have shallow, soft shoulders; Whereas later (e.g. 1978) have a more proud shoulder with sharper edges. Otherwise are completely interchangeable except although it's nice to have a fully matching set on a car.

(P.S. I have one 5J wheel for sale on ebay but needs a bit of work).

(P.P.S) All Mk3 Gt6s and spitfires have 4.5J wheels except the very last Spitfires which had 5J. 5.5J were never a triumph option.

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9 hours ago, chrishawley said:

This is one for the connosieur!

They are all proper Dunlop wheels but the pressing varied ever so slightly over the years from 1970 to 1980. If you look carefully at the shoulder of the oval holes you will see they differ. The early one have shallow, soft shoulders; Whereas later (e.g. 1978) have a more proud shoulder with sharper edges. Otherwise are completely interchangeable except although it's nice to have a fully matching set on a car.

(P.S. I have one 5J wheel for sale on ebay but needs a bit of work).

(P.P.S) All Mk3 Gt6s and spitfires have 4.5J wheels except the very last Spitfires which had 5J. 5.5J were never a triumph option.

If the 5.5J wheels were not a Triumph option, any idea where have they all come from ? 

Like most others now, my GT6 is fitted with 5.5J wheels and I would love to replace them with 5J's but never see any sets for sale.

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40 minutes ago, Qu1ckn1ck said:

If the 5.5J wheels were not a Triumph option, any idea where have they all come from ? 

Like most others now, my GT6 is fitted with 5.5J wheels and I would love to replace them with 5J's but never see any sets for sale.

One of the great mysteries as to why so many cars have them.

They were a Formula Ford wheel, still are. So I expect they were sold as an upgrade via magazines etc to Triumph owners. I also wonder if dealers may have offered them.

The lovely LP923 wheels are similar story, never a factory offering, but there are quite a few out there (many are bent, they are thinner steel) I have seen a 1960's magazine advert for the LP923s.

I expect many of the 5j wheels have been thrown away over the years, people fitting the 5.5J or even fitting used wheels/tyres that look the same when the cars had low value.

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I've bought three sets of 5.5J wheels now, two of them from Mallory Park Racing School and one set from a historic FF racer.  Remember that the offset dimension is the distance of the back of the centre plate from the midline of the wheel rim.  There are 16mm, which I think are best for a 'long driveshaft' car, and 3/8 - which is 10mm-ish.  Rumour has it that there may be a 18mm, but I've never seen one.

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James,

My September 1977 Spitfire ('S' reg) with all it's original fittings has 4.5Js with the 'proud and sharp' shoulder. If buying check the stamping around the periphery of the nave plate which should be exactly:

4.5 x 13  x 88

B8C

Dunlop symbol 957

312046

..and no stamping of the wheel webs.

By contrast my 1970 GT6 has the 'soft profile' with LP957 stamped on the web. 

Hope that helps.

C

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