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#552046 - 06/01/19 09:02 AM Wheel Spacers?
TBM Offline
L - Learner Plates On

Registered: 06/11/18
Posts: 138
Loc: Northants, UK
Anyone had any experience using them on steel rims?

I reckon there's about 30mm+ space between tyre wall and wing so plenty of space.

Could always go for wider wheels/tyres, but increasing the track slightly would make it easier to straddle all the speed bumps round here!
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#552048 - 06/01/19 09:20 AM Re: Wheel Spacers? [Re: TBM]
Sox Offline

L - Learner Plates On

Registered: 04/05/14
Posts: 124
Loc: Iver, Bucks
If you straddle the speed humps in my area you hit the gearbox cross member . Be careful.
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Tony

Claret Red +4

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#552051 - 06/01/19 09:29 AM Re: Wheel Spacers? [Re: Sox]
Gambalunga Online   content

Member of the Inner Circle

Registered: 03/09/11
Posts: 10507
Loc: Mandello del Lario, Lake Como,...
Originally Posted By Sox
If you straddle the speed humps in my area you hit the gearbox cross member . Be careful.

The Plus 4 has the lowest profile tyres of the whole range of "standard" trad cars. Fit 195/65 R15 tyres and you raise the ground clearance by 10mm.

Depending on the year model you may be suffering from the well known rear spring sag too.
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Peter


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#552052 - 06/01/19 09:38 AM Re: Wheel Spacers? [Re: TBM]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16767
Loc: South Yorkshire
I used narrow spacers years ago. They really need locating centrally on the hubs and may need extended studs.
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DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#552054 - 06/01/19 09:42 AM Re: Wheel Spacers? [Re: DaveW]
TBM Offline
L - Learner Plates On

Registered: 06/11/18
Posts: 138
Loc: Northants, UK
Originally Posted By DaveW
I used narrow spacers years ago. They really need locating centrally on the hubs and may need extended studs.


I'm thinking of either 5-10mm spacers and see how much meat is left on the studs, or going for the much larger hubcentric style which bolt onto the hubs and then have their own studs - these are about 25-30mm usually (used these on my Land Rovers).

I think I've read the PCD is 4x130 - does that sound right?
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#552056 - 06/01/19 10:13 AM Re: Wheel Spacers? [Re: TBM]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16767
Loc: South Yorkshire
Someone will know. I've only had wires on Morgans!
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2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#552196 - 06/01/19 04:43 PM Re: Wheel Spacers? [Re: TBM]
Button Offline
Talk Morgan Enthusiast

Registered: 19/12/11
Posts: 1582
Loc: Seattle, USA
I use wheel spacers on My +8 Bitsa with disk wheels. When I converted to Wilwood brakes and rotor the caliper interfered with the wheel. The amount of thread loss on the studs are a concern. But I really do not know how many threads are too few. However I am careful to use a torque wrench to insure they are set properly.

"I think I've read the PCD is 4x130 - does that sound right?" Do not know what "PCD" is. I can guess it is 4 studs X 130mm long.
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#552197 - 06/01/19 04:48 PM Re: Wheel Spacers? [Re: Button]
BobtheTrain Offline

Part of the Furniture

Registered: 15/04/14
Posts: 4843
Loc: Renfrewshire
Originally Posted By Button
Do not know what "PCD" is. I can guess it is 4 studs X 130mm long.

Pitch Circle Diameter. Diameter of the circle of the centre line of the bolts.
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Lang may yer lum reek

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#552200 - 06/01/19 04:53 PM Re: Wheel Spacers? [Re: TBM]
IvorMog Offline

Talk Morgan Regular

Registered: 17/04/17
Posts: 672
Loc: Staffordshire
4/130 is a fairly common wheel attachment.

PCD means pitch circle diameter.

If you drew an imaginary circle around the centre of the studs or wheel holes that circle is called the pitch circle and it's diameter is the pitch circle diameter or PCD.

Many German cars for example use a 5/112 wheel which means 5 studs or bolts on a 112mm PCD

Doh, Bob beat me to it


Edited by IvorMog (06/01/19 04:53 PM)
_________________________
Bob

1999 4/4 1.8 Zetec Silvertop

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#552206 - 06/01/19 05:31 PM Re: Wheel Spacers? [Re: Gambalunga]
Jon G4LJW Offline
L - Learner Plates On

Registered: 21/01/10
Posts: 208
Loc: Lampeter, Wales
Originally Posted By Gambalunga
....
The Plus 4 has the lowest profile tyres of the whole range of "standard" trad cars. Fit 195/65 R15 tyres and you raise the ground clearance by 10mm.
....


- My Plus 4 Sport has 205/65R15 tyres. No grounding problems, but luckily there aren't a huge number of road humps around here!
_________________________
Jon
AM02 MOG
2011 Ivory Plus 4 Sport

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#552207 - 06/01/19 05:39 PM Re: Wheel Spacers? [Re: TBM]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2312
Originally Posted By TBM
Anyone had any experience using them on steel rims?

I reckon there's about 30mm+ space between tyre wall and wing so plenty of space.

Could always go for wider wheels/tyres, but increasing the track slightly would make it easier to straddle all the speed bumps round here!


The early 4 bolt wheels you'll have on your 72 have a PCD that's not really that common. The Rostyle wheels for instance Morgan borrowed from an early VW Beetle.... the 5.5 inch width 15" wheels coming from a reasonably rare South African Beetle model.

I would advocate getting a set of the right wheels rather than fit spacers.

btw - when over tyring a 4/4 the measurement to check is the distance between the inner/upper of the front tyre and the top cross head mount. That'll be the place it hits first. You can quite easily over tyre the rear (I run 205/55/15 on my '72 2 seater) but a narrower 195/50/15 on the front.

I have genuine Minilite wheels 5.5" x 15" running a standard off-set matching the Rostyle wheel (which is the maximum Minilite can machine on this particular casting). You may be able to get more dishing if you used Image wheels and accepted the 3 piece modular design and the rim bolts that this results in.

I have a spare set of Rostyles and various Yokohama AD08's in the necessary sizes (or Toyo T1R's in 185/55/15's) if you are interested.
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#552210 - 06/01/19 05:49 PM Re: Wheel Spacers? [Re: cerealsurfer]
TBM Offline
L - Learner Plates On

Registered: 06/11/18
Posts: 138
Loc: Northants, UK
Originally Posted By cerealsurfer

The early 4 bolt wheels you'll have on your 72 have a PCD that's not really that common. The Rostyle wheels for instance Morgan borrowed from an early VW Beetle.... the 5.5 inch width 15" wheels coming from a reasonably rare South African Beetle model.

I would advocate getting a set of the right wheels rather than fit spacers.

btw - when over tyring a 4/4 the measurement to check is the distance between the inner/upper of the front tyre and the top cross head mount. That'll be the place it hits first. You can quite easily over tyre the rear (I run 205/55/15 on my '72 2 seater) but a narrower 195/50/15 on the front.

I have genuine Minilite wheels 5.5" x 15" running a standard off-set matching the Rostyle wheel (which is the maximum Minilite can machine on this particular casting). You may be able to get more dishing if you used Image wheels and accepted the 3 piece modular design and the rim bolts that this results in.

I have a spare set of Rostyles and various Yokohama AD08's in the necessary sizes (or Toyo T1R's in 185/55/15's) if you are interested.


Thank you for the info - I'm quite keen to keep the original wheels (not a big fan of the rostyles, and she came with five brand new tyres, so it will be a while before I want to fork out on some new ones).

Been given plenty of food for thought- I'll have a think about my next steps.....
_________________________
1972 4/4 4 seater
Too many ratty motorbikes

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#552260 - 06/01/19 08:07 PM Re: Wheel Spacers? [Re: TBM]
sospan Online   happy
Charter Member

Registered: 31/05/10
Posts: 5810
Loc: Llanelli
Also if changing tyre profile check for touching the front wing. Some cars have this quirk where the inner corner of the tyre can touch the wing where there is an inward curve.
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Red Plus8

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#552269 - 06/01/19 08:30 PM Re: Wheel Spacers? [Re: TBM]
Stephen888 Offline
L - Learner Plates On

Registered: 22/03/11
Posts: 183
Loc: Cambridge UK
Used spacers and wheel arch spats back in the 60s on the mini. I wouldn't feel comfortable with them on a Morgan. Better as others have said to get correct width rims.
_________________________
1980 +8 Blue
----------------
Stephen

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#552270 - 06/01/19 08:32 PM Re: Wheel Spacers? [Re: Jon G4LJW]
Gambalunga Online   content

Member of the Inner Circle

Registered: 03/09/11
Posts: 10507
Loc: Mandello del Lario, Lake Como,...
Originally Posted By Jon G4LJW
Originally Posted By Gambalunga
....
The Plus 4 has the lowest profile tyres of the whole range of "standard" trad cars. Fit 195/65 R15 tyres and you raise the ground clearance by 10mm.
....


- My Plus 4 Sport has 205/65R15 tyres. No grounding problems, but luckily there aren't a huge number of road humps around here!

It must be fitted with the standard Roadster rims, which is an option, the standard tyre fitment on the Roadster was 205/60 R15. Fitting 195/65 tyres takes the ride height up to about 15mm more than the standard Plus 4.
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Peter


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#552280 - 06/01/19 09:18 PM Re: Wheel Spacers? [Re: TBM]
Richard Wood Offline
Has a lot to Say!

Registered: 03/02/16
Posts: 1388
Loc: East Harling, Norfolk UK
Tyre dimension calculator here.

Includes revs/mile as well to compare relative speedo readings.
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

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#552288 - 06/01/19 10:04 PM Re: Wheel Spacers? [Re: TBM]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2312
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#552445 - 07/01/19 08:15 PM Re: Wheel Spacers? [Re: TBM]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2312
Just to correct my previous sizes - I just checked;

Fronts: 185/55/15
Rear: 205/50/15

Tyres are Yokohama AD08 R
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#552449 - 07/01/19 08:36 PM Re: Wheel Spacers? [Re: cerealsurfer]
CooperMan Offline

Talk Morgan Regular

Registered: 19/11/15
Posts: 547
Loc: Yorkshire
Originally Posted By cerealsurfer
Just to correct my previous sizes - I just checked;

Fronts: 185/55/15
Rear: 205/50/15

Tyres are Yokohama AD08 R


Is your rolling circumference the same, F & R ?
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Jon M

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#552455 - 07/01/19 09:08 PM Re: Wheel Spacers? [Re: CooperMan]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2312
Originally Posted By CooperMan
Originally Posted By cerealsurfer
Just to correct my previous sizes - I just checked;

Fronts: 185/55/15
Rear: 205/50/15

Tyres are Yokohama AD08 R


Is your rolling circumference the same, F & R ?


As much as you’d notice yes. Not even enough to make a 1mph difference on the speedo. So tyre squidge and pressures would have as much of an impact.
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#552496 - 08/01/19 08:24 AM Re: Wheel Spacers? [Re: TBM]
CooperMan Offline

Talk Morgan Regular

Registered: 19/11/15
Posts: 547
Loc: Yorkshire
That's interesting as I don't know of anyone (yet) who's using different tyre widths F & R

Could work well for lighter steering, but still have a good tyre contact patch for rear power delivery & grip
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Jon M

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#552511 - 08/01/19 09:49 AM Re: Wheel Spacers? [Re: CooperMan]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2312
Originally Posted By CooperMan
That's interesting as I don't know of anyone (yet) who's using different tyre widths F & R

Could work well for lighter steering, but still have a good tyre contact patch for rear power delivery & grip

I have narrower tyres for the front due to the Crosshead issue... I run 1 Deg Neg Camber which adds to this issue.

The rears being larger help keep in control the added power of my Blue and White racer which is 285bhp... a flat upshift 2nd-3rd in the dry will result in wheelspin which I was keen to try to contain. I keep the same sizes between the two cars to try to control the quantity of tyres I have knocking around... at one point I had 5 full sets of wheels and wets/dry's for both cars along with around 6 spares.
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