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Wales
by Joske Vermeule, September 1
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Jun 14th, 2026
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Joined: Jan 2014
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Just Getting Started
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OP
Just Getting Started
Joined: Jan 2014
Posts: 82 |
hello
i drive a morgan +4 2008 and did not pas belgian mot , because to little ground clearance
,the car is in origional condition with the right spec tires and rims .
in belgim the car has to be 11 cm above the ground and i do not have even got 9 cm .
I already passed mot 6 times whitout any isseu and now i failed because of that isseu
Please help
mvg tom
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Joined: Nov 2018
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Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,669 Likes: 434 |
The simplest solution might be to get a different set of tyres with a much deeper aspect ratio. That 'might' be enough to give you a couple of centimetres? Otherwise I imagine it's going to be suspension work.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Jul 2007
Posts: 27,813 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,813 Likes: 749 |
Inflating the tyres to a higher pressure might help.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Oct 2012
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Learner Plates Off!
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Learner Plates Off!
Joined: Oct 2012
Posts: 313 Likes: 1 |
I have just changed the tyres on my plus 4 2013 to 65 aspect ratio in lieu of 60 which is standard for the car with 15inch wheels. This gives more ground clearance (about 10mm I think).
Bob.
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Joined: Nov 2018
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Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,669 Likes: 434 |
A new set of rear springs would probably give you a decent lift at the back, cheap to buy (under £300 plus Brexit tax) - simple but time consuming to fit.
I don't know enough about the front end, but there's bound to be some form of spring change that would give you a lift.
9cm does seem a bit low - just been out to measure mine (albeit a '72 4 seater on new rear springs and big fatty tyres) and I've got almost double that clearance between the bottom of the chassis rail and the floor (17+cm).
Last edited by TBM; 29/01/21 11:03 AM.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
My AERO Plus 8 would not pass at all, the silencers and sump plate are all less than 8cm.
It seems that the Belgian MOT people are retrospectively applying modern regulations: all new cars must clear 10cm.
But so far it is not part of the UK MOT.
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Nov 2018
Posts: 6,669 Likes: 434
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,669 Likes: 434 |
My AERO Plus 8 would not pass at all, the silencers and sump plate are all less than 8cm.
It seems that the Belgian MOT people are retrospectively applying modern regulations: all new cars must clear 10cm.
But so far it is not part of the UK MOT. My road has a primary School, so is a 20mph zone, with speeds humps all the way along. I don't think I'd get in and out with 8cm!
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Jun 2015
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2015
Posts: 2,093 Likes: 73 |
For comparison Tom, my 2011 plus 4, (38000miles) with 195/60 tyres inflated to 22psi on 15 inch wheels has 9.3cm measured to the bottom of the bell housing.
Last edited by Deejay; 29/01/21 11:16 AM. Reason: deleted question on mot limit as already in op posting
Doug
2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Joined: Jul 2011
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Has a lot to Say!
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Has a lot to Say!
Joined: Jul 2011
Posts: 1,245 Likes: 30 |
My 2011 4/4 has about 7.5 Cm with 175/70 HR15. That is to Wolf's rubbing plate.
4/4 Ivory 4.1:1 axle, Mercedes A200 AMG
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Joined: Nov 2018
Posts: 6,669 Likes: 434
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,669 Likes: 434 |
195/60 x 15 tyres have a diameter of 24.21". To get a 2cm raise, you're going to need at least a 2" increase in diameter. 195/70 x 15 tyres are 25.75", 195/75 x 15 are 26.52" Useful tyre tool as an indicator - Tyre Calculator
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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