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Sold
by simon8201 - 09/09/26 01:46 PM
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Wales
by Joske Vermeule, September 1
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Jun 14th, 2026
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Joined: Jul 2016
Posts: 102 Likes: 1
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2016
Posts: 102 Likes: 1 |
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
A convert to the joy of Morgans after years of motorcycles
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Joined: Jul 2016
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L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2016
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PS: ARP4 now changed for the +8 Speedster so sorry for confusing sign off. I'll change it.
Ian
A convert to the joy of Morgans after years of motorcycles
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Joined: May 2012
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L - Learner Plates On
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L - Learner Plates On
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I have always run my Speedster at 25 psi.
Last edited by John Winn; 13/12/18 07:58 PM.
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Joined: Mar 2009
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Smile, it confuses them Member of the Inner Circle
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Smile, it confuses them Member of the Inner Circle
Joined: Mar 2009
Posts: 11,535 Likes: 321 |
I run my Series 2 Aero at 25 front and 26 back on Mich PSS.
Everyone loves a Morgan. Even me, unless it's broken again.
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Joined: Jul 2016
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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
A convert to the joy of Morgans after years of motorcycles
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Joined: Dec 2017
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Dec 2017
Posts: 2,223 Likes: 183 |
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
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice) tis no more
2013 M3W (Olga)
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Joined: Sep 2009
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Talk Morgan Guru
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Talk Morgan Guru
Joined: Sep 2009
Posts: 7,435 Likes: 122 |
And with only a small difference between front and rear you can adjust the wanted degree of oversteer or understeer very well.
'14 4/4 graphite grey
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Joined: May 2007
Posts: 987
Talk Morgan Regular
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Talk Morgan Regular
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Agree 22 all round on Toyo proxes
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Joined: Jul 2007
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Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
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Posts: 28,909 Likes: 354 |
I have always run my 1994 +8 at 22 psi... 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. 
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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Joined: Sep 2010
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Sep 2010
Posts: 2,433 Likes: 17 |
25psi for me on the Aero +8.......
1969 4/4
1995 plus 8
1996 Plus 4 4seater
2002 Aero S1
2013 M3W
2014 Plus 8
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