Magnum 500's

Anonymous · Post by **Anonymous** » Wed Nov 14, 07 11:53 pm

Hi guys...

Can anyone help me here...I cant measure my own wheels 'coz the car isnt here but... need to find out in inches the measurement between two nearest bolt holes on a 14" Magnum 500 rim and also the diameter of the center hole..??

Cheers in advance!

newport100 · Post by **newport100** » Wed Nov 14, 07 11:57 pm

Hi Steve

Sorry- Cant answer- but have you sold the Dodge???

Anonymous · Post by **Anonymous** » Thu Nov 15, 07 12:01 am

Na still got it!!

newport100 · Post by **newport100** » Thu Nov 15, 07 12:03 am

Anonymous · Post by **Anonymous** » Thu Nov 15, 07 12:05 am

Anonymous · Post by **Anonymous** » Thu Nov 15, 07 1:30 am

They measure 4 & half inches across No 1 & 3 studs , or 3 & 5 stud , or simplified , miss a stud when measureing.

What would be the best way to explain it? , as it's got me going now.

Me number TWO on the keypad don't work.

RobTwin · Post by **RobTwin** » Thu Nov 15, 07 8:56 am

On a 4.5" pcd wheel (which yours should be), the centre distance between 2 adjacent bolt holes is 2.65" or 67.2mm

Adam, the 4.5" measurement is the diameter of the circle that the studs are arranged on (pcd - pitch circle diameter), so the distance between 1 & 3 for example would be 4.28" or 108.7mm.

So there.

Kev · Post by **Kev** » Thu Nov 15, 07 9:50 am

5 lug patterns.
Measure from the center of one stud hole, skipping the adjacent hole,
to the outer of the furthest stud hole.

RobTwin · Post by **RobTwin** » Thu Nov 15, 07 9:51 am

ie X = 67.2mm

and dont forget the .2

Thanks Kev, I thought I'd heard of a way of getting the pcd measurement from measuring across 2 studs, but couldnt remember it

Kev · Post by **Kev** » Thu Nov 15, 07 9:55 am

Or!
Use this diagram. And do the following calculation;
5 Stud PCD = S divided by 0.5878

RobTwin · Post by **RobTwin** » Thu Nov 15, 07 10:00 am

or.....

S = 4.5 (PCD) x 0.5878

= 2.6451

Ivor · Post by **Ivor** » Thu Nov 15, 07 10:04 am

RobTwin wrote:ie X = 67.2mm

Is that some sort of foreign measurement?

Mine measures 2 11/16"....

Anonymous · Post by **Anonymous** » Thu Nov 15, 07 10:05 am

Or, centre of hub to centre of stud and double it (as there isnt a stud directly opposite)

Anonymous · Post by **Anonymous** » Thu Nov 15, 07 10:14 am

RobTwin wrote:On a 4.5" pcd wheel (which yours should be), the centre distance between 2 adjacent bolt holes is 2.65" or 67.2mm

Adam, the 4.5" measurement is the diameter of the circle that the studs are arranged on (pcd - pitch circle diameter), so the distance between 1 & 3 for example would be 4.28" or 108.7mm.

So there.

RobTwin · Post by **RobTwin** » Thu Nov 15, 07 10:16 am

Ivor wrote:
RobTwin wrote:ie X = 67.2mm
Is that some sort of foreign measurement?

Mine measures 2 11/16"....

that's a millimeter out Ivor

, sorry, 1/25 (ish)" out - you'll confuse the poor lad