wheel rim pcd?

can anyone tell me ( or tell me where to find out) which car had a four stud pcd of 104mm?

sounds like 4 3/32" is the more likely . . . . .its definitely metric? Ford is 4 1/4" ( I think)

Originally posted by zefarelly
sounds like 4 3/32" is the more likely . . . . .its definitely metric? Ford is 4 1/4" ( I think) That's right, Ford is 4 1/4" which translates to 108mm in metric - Escort, Focus, etc.....

Some french cars are also 108mm (some Citroen and Peugeot models). 100mm is common (VW, Vauxhall/Opel, Renault, Mazda.....) and Italian cars tend to use 98mm (Fiat, Lancia, Alfa), except older (50's, 60's and early 70's) Alfa's used 108mm.

All the above is for 4 stud wheels.... 5 stud's can be different PCD and there are exceptions to the rule.

But 104mm, I've never seen, nor can I find anything in a web search. Where did you find these wheels?

www.rimstock.co.uk have a web based fitment guide - its been upgraded so its not as good as it used to be but you might find something there

We are just starting to rebuild a 1960 Crossle Formula Junior which seems to have 104mm PCD which we are lead to believe are Ford 100E . We will be fitting alloy wheels so the original wheel does not matter , but would be interested to find out what they are .

Thanks for your responses guys. As yet I have not been able to find a definitive answer for the 104mm PCD, but I shall research the Ford 100E aspect. Similar to yourself Ianselva, I am starting to rebuild an early Clubman. It has an early BMC diff andd there is a chance that the hubs are Morris Major (which was a car built here in Oz by BMC). More as I go.
Thanks again.

I've just bought a 1972 Welsor Clubman that has a four inch PCD (as crudely measured by me) metric equivalent is 102mm.

It has a Morris Minor rear axle (as appears to be very common for Oz built clubmans and Sports 1300's). But am not sure if MM's came out with this PCD or whther it is the result of re-engineering when this car was built.

Ian - I don't believe anyone in the British Isles would have measured pcd in mm in 1960 ! So it must be either 4 in or 4 1/16 or even 3/32

1" = 25.4mm

4 1/4" = 107.95mm (Ford)

4" = 101.6mm

As Josvandepere says, Its exceedingly unlikely anyone from the British Isle made any metric sizes in the early 60's. or the Americans even now for that matter. :D

Metric is most likely to be nice round numbers, and French, Italian or German

the obvious cross over here is Ford @ 4 1/4" and peugeot @ 108mm (I think)

Yep, I know from experience on my Alfa that Ford Escort/Cortina 4 1/4 inch fits the 108mm PCD (even though the offset is wrong).

Does anybody know what cars run a 4 inch PCD?

In the old days, cars like imps, midgets,vivas, firenzas i also think that triumph uprights that many single seater builders used had 4'' pcd therefore ff and f3 cars had them.
Since for example clubmans cars which used the above uprights and a bmc/morris axle had 4' pcd wheels. I had a Firenza on 10 and 12 wheels 4'pcd 13 inch diameter, quite common in the 80 s

Thanks Vaughan - that's really helpful.

On my Clubman I think the front uprights are Triumph (herald maybe) and the rear axle is certainly BMC. It currently has 13 x 9 and 13 x 10 wheels - so some spares might be available from a F3 car perhaps.

What you have sounds like a 4" pcd made badly. Production tolerances were big in the bad ol' days and that's if they were properly inspected. I was looking for some Triumph front wheel studs for my Clubmans car a while ago and every single stud was bent. I had to go through a hundred to find four that were fairly straight. Why were they bent? Turned out that the wheels and hubs were made to different pcd's on a lot of Triumphs.....! (My Triumph front hubs are 3.75" pcd)
Most common 4" is BMC Mini, 1100, Minor etc. The stuff is all available but the hard bit (as you are pointing out) is knowing what your car is built from.

You're in the local helpful Motor Factors, you show them the bit hoping they recognise it instantly and they ask the dreaded question "what's it from then?" sheepish mumbled reply....."er, I don't know, I think it's...etc. etc." I found a few places that liked racing and they sent me halfway round the country chasing wild geese, but at least they were friendly about it!

I have rechecked our Formula Junior hubs and they are definitely bigger than 4" . I said they were 104 mm because I only had a metric rule with me at the time , obviously they are an imperial size. As the car was built in 1959 it would make sense for them to be Ford 100E, but nobody yet has given me a pcd for the Ford 100E. I guess i'll have to keep looking in the breakers yards and make sure I have an imperial measure
with me

So if we assume 4 inch (4 x 25.4 = 103.6mm) is what you have..... the following is a list of cars with 4 inch p.c.d. (4 stud/bolt wheels), from the book "How to make your car handle" by Fred Puhn (1976):

Buick 75 Astre, Skyhawk
Chevrolet 71-75 Vega
Chevrolet 75 Monza
Austin Healey Sprite
MG Midget

So it seems that Austin/Morris/BMC is the most likely, but don't rule out General Motors (someone mentioned Firenza).

4" = 101.6
4.25" = 107.95
3.75" = 95.25

Alfasud . . . .sprites and midgets have splines . . . how do you measure them ;)

does anyone know what triump herald is? I have a TVR vixen and I want to find a space saver spare wheel that'll fit in the back (14" Diameter) someone mentioned Saab or VW beetle . . . .can anyone confirm this?

oops . . .15" diameter I meant . . .and I believe tvr used herald hubs?