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+8 tyre pressures #547903
13/12/18 06:32 PM
13/12/18 06:32 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
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Almond Offline OP
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Cambs., UK
Apologies if this has been done to death but what tyre pressure do people run on recent +8s? I'm new to the +8 and I've been using it at 2.2 bar (32 psi) since I collected it from Krazy Horse in the summer. The car is on 245/40 R18 Yokohama Advans and ride comfort was not too bad so I've only now got round to checking it (I know I know .. probably should have done it before..)
The manual says 25 psi (1.7 bar) but presumably it was set at 32 psi for a reason. 32 psi strikes me as high (low mass car and relatively wide footprint etc) but as the ride comfort was not too bad maybe thats right. Who knows? Certainly not me! and I would appreciate any feedback based on personal experience.

Thanks guys.


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #547904
13/12/18 06:33 PM
13/12/18 06:33 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
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Almond Offline OP
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Cambs., UK
PS: ARP4 now changed for the +8 Speedster so sorry for confusing sign off. I'll change it.


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #547909
13/12/18 07:09 PM
13/12/18 07:09 PM
Joined: May 2012
Posts: 112
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John Winn Offline
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I have always run my Speedster at 25 psi.

Last edited by John Winn; 13/12/18 07:58 PM.
Re: +8 tyre pressures [Re: Almond] #547915
13/12/18 07:43 PM
13/12/18 07:43 PM
Joined: Mar 2009
Posts: 6,083
Hampshire
Alistair Offline
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I run my Series 2 Aero at 25 front and 26 back on Mich PSS.


Just time to burn a little more petrol before dinner.
Re: +8 tyre pressures [Re: Almond] #547921
13/12/18 08:22 PM
13/12/18 08:22 PM
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Posts: 54
Cambs., UK
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Almond Offline OP
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Many thanks for the quick feedback John, Alistair. 25 psi it is then, with maybe a bit more at the back when with luggage etc.


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #547931
13/12/18 09:17 PM
13/12/18 09:17 PM
Joined: Dec 2017
Posts: 218
Colorado, USA
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britmog Offline
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Colorado, USA
I have always run my 1994 +8 at 22 psi both front and back. Found this pressure to give the correct handling and ride comfort for me especially on the twisty mountain roads here in Colorado.

I would try different pressures between 22 - 26 psi and see which you prefer.


Bruce Marshall
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice)
2013 M3W (Olga)
Re: +8 tyre pressures [Re: Almond] #547934
13/12/18 09:37 PM
13/12/18 09:37 PM
Joined: Sep 2009
Posts: 3,998
Cologne, Germany
Heinz Online content
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Cologne, Germany
And with only a small difference between front and rear you can adjust the wanted degree of oversteer or understeer very well.

Re: +8 tyre pressures [Re: britmog] #547983
14/12/18 10:03 AM
14/12/18 10:03 AM
Joined: May 2007
Posts: 921
Walsall, uk
R
robmog88 Offline
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Joined: May 2007
Posts: 921
Walsall, uk
Agree 22 all round on Toyo proxes

Re: +8 tyre pressures [Re: robmog88] #547984
14/12/18 10:22 AM
14/12/18 10:22 AM
Joined: Jul 2007
Posts: 22,493
Cheltenham, Glos. UK
Graham, G4FUJ Offline
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Graham, G4FUJ  Offline
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Cheltenham, Glos. UK
Originally Posted By britmog
I have always run my 1994 +8 at 22 psi...

Originally Posted By robmog88
Agree 22 all round...


One slight problem with those answers - the OP is requesting pressures for the Aero (ally chassis) based Plus 8, not a trad/classic. The tyres on the Aero Plus 8 are more like rubber bands. smile


Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'07 MINI Cooper
Re: +8 tyre pressures [Re: Almond] #548112
14/12/18 10:13 PM
14/12/18 10:13 PM
Joined: Sep 2010
Posts: 1,555
Wales
T
Taffmog Offline
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Wales
25psi for me on the Aero +8.......

Re: +8 tyre pressures [Re: Almond] #548129
15/12/18 04:58 AM
15/12/18 04:58 AM
Joined: Jun 2014
Posts: 10,703
Lancashire, England
Stewart S Offline
Wave & smile... It's a Morgan
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Lancashire, England
32 psi does seem high Ian for the weight of a modern Plus 8 or any Morgan

If you were mostly motorway driving at speed then a higher pressure might be advantageous (mainly for tyre wear, economy, reducing heat and water dispersment in the wet) but for general driving 25 sounds much more appropriate for getting the right traction and handling


2008 Bugatti Blue Roadster 4 Seater
Re: +8 tyre pressures [Re: Almond] #548153
15/12/18 09:26 AM
15/12/18 09:26 AM
Joined: Sep 2014
Posts: 1,650
YORK
KEVFITZ Offline
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YORK
Nice series of cars Almond:

P4SS (Almond Green)

ARP4 (Black)

+8 Speedster (?(

Any pictures of Speedster?


HEAR THOSE THROTTLE BODIES ROAR ….UNEXPLODED BOMB !!!!
Re: +8 tyre pressures [Re: Almond] #548159
15/12/18 09:43 AM
15/12/18 09:43 AM
Joined: Mar 2014
Posts: 385
Berkshire/Oxon & Devon
JB62 Offline
Learner Plates Off!
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Berkshire/Oxon & Devon
Run my Speedster at 22 psi all round. Tried higher - didn’t like the ride so much and it’s hardly as I am using the Speedster on the edge of its performance.

It would kill me whatever the tyre pressure if I tried.


V8 Speedster
Re: +8 tyre pressures [Re: Almond] #548276
15/12/18 10:08 PM
15/12/18 10:08 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
A
Almond Offline OP
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Cambs., UK
Thanks again all! Graham's comment well noted re ally chassis vs. trad. It looks like a consensus on 25psi and I adjusted to that earlier today. I was going to take a run out to see how it felt but logsplitting duties prevailed - felt suitably manly in the cold winds of Cambridgeshire with an axe and chainsaw.

Kev, Thanks for the comments. These are my sort of Morgans and I would love to have kept them but that was never an option for various reasons - especially budget!
I'll post a picture of the Speedster as soon as I work out how to do it however the car is still on the Morgan used car locator at Krazy Horse (marked sold). Its the blue one with white rondels etc - bit of a P4SS and ARP4 conenction in my mind. These are the sort of Morgan's I love.

Thanks again for all the useful comments. Great forum!


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #548290
16/12/18 07:20 AM
16/12/18 07:20 AM
Joined: Jul 2007
Posts: 22,493
Cheltenham, Glos. UK
Graham, G4FUJ Offline
Salty Sea Dog
Graham, G4FUJ  Offline
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Member of the Inner Circle

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Posts: 22,493
Cheltenham, Glos. UK
For posting photos, if you don't currently have access to a photo hosting site, sign up to https://www.tm-img.com
Started by a gentleman here (Peter, Gambalunga) and maintained by him and Tim (Hamwich).
Instructions here: https://www.tm-img.com/page/ifu

cheers


Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'07 MINI Cooper
Re: +8 tyre pressures [Re: Almond] #548307
16/12/18 09:28 AM
16/12/18 09:28 AM
Joined: Sep 2014
Posts: 1,650
YORK
KEVFITZ Offline
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YORK



This one ?


HEAR THOSE THROTTLE BODIES ROAR ….UNEXPLODED BOMB !!!!
Re: +8 tyre pressures [Re: KEVFITZ] #548314
16/12/18 09:55 AM
16/12/18 09:55 AM
Joined: May 2012
Posts: 112
J
John Winn Offline
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John Winn  Offline
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J

Joined: May 2012
Posts: 112
Yes the very one.

Re: +8 tyre pressures [Re: Almond] #548347
16/12/18 02:10 PM
16/12/18 02:10 PM
Joined: Oct 2013
Posts: 6,324
Northamptonshire UK
Stringers Best Mate Offline
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Stringers Best Mate  Offline
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Northamptonshire UK
Oh, I DO like that..


Steve
Re: +8 tyre pressures [Re: Almond] #548353
16/12/18 02:40 PM
16/12/18 02:40 PM
Joined: Feb 2011
Posts: 14,003
Cumbria UK
Jays Offline
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Cumbria UK
I could almost be tempted 😳


Jays
Former Morgan owner. Gone but hopefully not forgotten!
Re: +8 tyre pressures [Re: Almond] #548358
16/12/18 02:57 PM
16/12/18 02:57 PM
Joined: Sep 2014
Posts: 1,650
YORK
KEVFITZ Offline
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YORK
No good for Cumbria John !!!!


HEAR THOSE THROTTLE BODIES ROAR ….UNEXPLODED BOMB !!!!
Re: +8 tyre pressures [Re: Jays] #548411
16/12/18 09:00 PM
16/12/18 09:00 PM
Joined: Sep 2011
Posts: 11,597
Mandello del Lario, Lake Como,...
Gambalunga Offline
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Gambalunga  Offline
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Mandello del Lario, Lake Como,...
Originally Posted By Jays
I could almost be tempted 😳

John! Don't be a tart somestick


Peter

[Linked Image]
Re: +8 tyre pressures [Re: Almond] #548766
18/12/18 07:06 PM
18/12/18 07:06 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
A
Almond Offline OP
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Cambs., UK




Lets see if this works...


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #548769
18/12/18 07:11 PM
18/12/18 07:11 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
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Almond Offline OP
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Cambs., UK
Thanks Graham for pointing out how to post pictures.

Previous post in the Speedster - I fell for the '8' on the mesh grille of the latest 50th anniversary model so Krazy Horse added that although you can't see it due to reflections in the picture. They also did a few other bits n pieces for me before taking delivery.

PS: tyre pressures reduced to 25 psi and much better traction. Went out on cold and greasy Norfolk roads on Sunday and was pleasantly surprised by the road contact feel and general grip. Comfort not so different but then maybe I have no sensitivity left after a couple of years in the ARP4!




Last edited by Almond; 18/12/18 07:15 PM.

Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
Re: +8 tyre pressures [Re: Almond] #548789
18/12/18 08:20 PM
18/12/18 08:20 PM
Joined: Sep 2009
Posts: 3,998
Cologne, Germany
Heinz Online content
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Heinz  Online Content
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Joined: Sep 2009
Posts: 3,998
Cologne, Germany
Almond, is the Elise also yours?

Re: +8 tyre pressures [Re: Almond] #548807
18/12/18 09:19 PM
18/12/18 09:19 PM
Joined: Jul 2007
Posts: 22,493
Cheltenham, Glos. UK
Graham, G4FUJ Offline
Salty Sea Dog
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Very nice!
Glad you have the photo side of things figured out now smile


Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'07 MINI Cooper
Re: +8 tyre pressures [Re: Almond] #548815
18/12/18 10:11 PM
18/12/18 10:11 PM
Joined: Dec 2009
Posts: 20,733
Devonshire
+8Rich Online content
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+8Rich  Online Content
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Devonshire
You are a very lucky boy, that colour suits it down to the ground.


Regards Richard

1999 Indigo Blue +8
2009 4/4 Sport Green
1994 Connaught Green +8





Re: +8 tyre pressures [Re: Almond] #556885
31/01/19 07:19 AM
31/01/19 07:19 AM
Joined: Feb 2018
Posts: 25
Kent
S
SteveLoc Offline
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SteveLoc  Offline
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Joined: Feb 2018
Posts: 25
Kent
Hello Ian,
Enjoy the +8 I hope you have many great drives, I love the colour.
I still love the Almond +4SS after a long trip in the summer it has loosened up nicely.
All the best

Last edited by SteveLoc; 31/01/19 07:21 AM.

1978 +8 Indigo Blue “race car”
2011 +4 Super Sports 16/60 Almond Green
Re: +8 tyre pressures [Re: Almond] #556889
31/01/19 08:02 AM
31/01/19 08:02 AM
Joined: Apr 2012
Posts: 4,524
Surrey. UK
Neilda Offline
Part of the Furniture
Neilda  Offline
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Surrey. UK
Looks terrific.... love the spots.


+8 4.8
Re: +8 tyre pressures [Re: Almond] #556908
31/01/19 09:22 AM
31/01/19 09:22 AM
Joined: Sep 2014
Posts: 1,650
YORK
KEVFITZ Offline
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YORK
SteveLoc

Don't tell everybody how special Almond Green P4SSs are !!!

Everybody will want one !!!

Keep The Faith !!


HEAR THOSE THROTTLE BODIES ROAR ….UNEXPLODED BOMB !!!!
Re: +8 tyre pressures [Re: Almond] #563220
02/03/19 08:14 PM
02/03/19 08:14 PM
Joined: Jul 2016
Posts: 54
Cambs., UK
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Almond Offline OP
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Cambs., UK
Sorry for tardy reply al, but work/life has been a bit hectic of late. And to make things even worse, major works going on at home mean the Morgan has been confined to the garage for the past month, inclduing the great weather last week (big trench across the front of the +8's garage for new services/gates to be installed which have been held up). It will make finally getting out in the car all the sweeter .. (really?).

Thanks for the message Steve and good to know Monsieur Almond is going well and properly loosened up. Its well established (in my mind anyway) that Almond Green is the second best colour for a Morgan so enjoy. Same to Kev!

Just invested in an open face helemt (Schuberth, a la John Winn). Got a dent in my forehead from a small stone last time out - I fear that even screwing my eyes up tight behind sunglasses may not provide full protection at +8 speeds..

All the best to all you boys and girls - enjoy and be carefull out there.


Ian
now +8 and ex-ARP4 (weeps quietly)

A convert to the joy of Morgans after years of motorcycles
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