Mag Wheels

[(AUST)Mod]

As you all know around 12 months ago, I was given a set of Hopster mags. These are EH offset and in 15x6 and 15x7. They have caused nothing but grief in fitment and the tire dude still insists that they would fit with guard rolling - what an idiot. Anyway, the rears are now on with help from you mob (LC/LJ Diff), but now iam looking to buy new 15x4 rims for the front, hoping they will fit. Can anyone direct me to the correct offset for a rim of this size? I will be buying 4 15x4 skinny hopsters as the old 6" wide fronts intended originally for the FB can go onto the rear of my sisters egyptian tan ek. thanks
Andrew
(Hey rosco i want a 1pg post on this topic haha)

[Harko]

I thought a 6 incher would go on the front ! Dunno what your running but the setup that will allow 6s would be P76 leyland disks etc and would probably be cheaper and easier to buy new rims...

[(AUST)Mod]

Hrko, 6s would go on the front, but these rims are EH holden offset and thats for a wider bodied car - the guard sits on the tyre i spose if i raised the car abit it would prob clear it, but i dont want to

[munro]

what brakes are you running

[(AUST)Mod]

Hr Discs up front, Torana rear

[munro]

with the offset of HR disks you shouldn't have those problems.
make sure the disk hats are screwed to the disks via either counter sunk philips or allan key screws and not bolts.
cheers tom

[Malcolm]

Andrew,

I have a HR front in my sedan with Leyland P76 disc's. My front rims
are 17 x 7 and backs are 17x8, I have rolled the guard lip as much
as possible and Im hoping I won't wont have to much trouble.



This picture is with the wheel on but the guard lip has not been rolled
yet in this picture

Mine probably doesn't sit as low as yours either, but if I do have
problems with rubbing guards it will be getting lifted a little

[Devilrod]

Have you looked at machining some off the back of the centre of the rim?My mate had this done to his Hopsters to fit better in the rear of his Compact Fairlane. Although it sounds to me you have been sold a rim with the wrong offset to what was actually needed.

[mrs ratbox]

his main problem is as he says the car is to low (not that there is such a thing ) i know what he's talking about the car that i had drop stubs on (flat black silver flames) had stock 14x5" HK steel wheels with 175x60x14 tyres and they used to rub on the guards when turning and this is with the lip cut out and bashed up
so by buying 4" rims this may not help as the outward dish may not change cause when they fit the centre to the rim there is a certain point where they can't move the centre any furter out

[rosco]

Hi Andrew,
will definitely struggle giving you much on this - I have precious little experience with wheels.............. I have HR disc f/e and EH rear.

With respect to the specs I can muster - the tread dimensions for EK and EH are identical - ie 54.5 inches.
For HR there are two quoted - 54.9 for sedan and wagon, 54.5 for P/van & Ute.

Bodywise - width for EK is 67.03 in
EH 68.0 in (67.9 for Ute and P/van)
HR 70.0 in.

All wheels are specified as 13 x 4.50 J
no mention of offset is quoted, but I am certain the offset for HD/HR is different.

I am also almost certain wheels manufactured for HD/HR disc brakes have a small hole drilled in the webbing post between two of the stud holes to identify as disc brake wheel -
I believe this may be due to a different offset again.

I did try to fit LX 13 x 5.50 vented wheels to mine in 1982 with the result that they would not clear the dual piston callipers - I am unsure if they will clear a floating calliper if fitted to a HR front end.

Although we take much of what people "tell" us as fact, the wheels you have may indeed not be intended for EH - I cannot understand why 6" rims will not fit - many of my friends had 6" "widies" fitted to their EH's back in the '70's whilst I persevered with my big old EK and its 4.5's
some were lowered to the point of nearly having the hub caps in line with the wheel-arch - they scrubbed tyres, but more respectable 'drops' were fine.

Have you tried different wheel manufacturer contacts? - I would want quoted "offsets" to all be identical................
There may be legal issue with the amount of offset you are permitted to alter - systems engineer would have those for you.
From memory, we were allowed 1" in or 1" out here - but that was some time ago..........

A friend and member of our club has 15 x 6 (or 7) alloys fitted to his FB and they are fine.
He is running HR calllipers.
- there seems to be something amiss with what you have..........

I'll see if I can get some info on what wheels/offsets and manufacturer for you - that may give you a current manufacturer specification.

It won't be for a couple of days........ just this little sojourn called Christmas................


So, Andrew.............. you didn't get the page you wanted - and got precious little else but ramble this time..............

apologies,

frats,
Rosco

[Devilrod]

So, Andrew.............. you didn't get the page you wanted - and got precious little else but ramble this time..............

apologies,

frats,
Rosco

I think he may have got a really good answer there Rosco!
You mentioned body widths, showing only a half inch overall difference.
Soooo if he was told they are EH offset I'm guessing they may not clear either especially when lowered. Although when he says EH spacing is this for the backspacing? If so it would explain the fouling of the gaurd with the extra inch or so over standard.

Aust(mod) quite a few years ago a mag did an article on checking offset for wheel clearance, I can't seem to find it, BUT if you take off your front wheel and then put an axle stand under it to allow the car to drop back to ride height (careful placement of the stand is needed under the wishbone so as to allow the suspension to sit at normal driving position).

Then take a either a straight edge or 600mm builders level and place it across the surface of the disc where the wheel studs are. Making sure you have it near the gaurd lip (top).

Then with either a small ruler (300mm or tape measure) measure from the gaurd lip to the edge of the builders level or straight edge that is against the disc wheel stud face.

This will tell you how much room you have.

Next Measure from the back of the centre of the rim (hopster) to the outside edge of the rim. Basically place the straight edge from lip to lip of the rim passing over the centre. Measure down to the centre of the back of the rim and this will tell you how much backsping you have.

If its a 6' rim and you have 2' of backspacing this will mean you have 4' going out the other way. Compare that with the clearance you measured to the gaurd lip and this will show how little clearance you have (of which you already know). But will give you an idea of how to get an offset to suit. Also use the same method to check how far in (known as backspacing) to the centre of the car you can go before fouling on steering arms.

If I get a chance I'll try and find the article although I don't like my chances finding it....

Hope this helps.

[vintageholden]

i have hr front disks and eh rear on my eh van
i have 15x7 front
and 15x8 on the rear with 265x50 on the back
tried them on my ek just now and they fit with no rubbing???



got some rust to fix up soon