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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: 240
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2016
Posts: 240 |
Afternoon all,
The ground clearence under my gearbox crossmember is around 75mm, I have the wolf scuff plate fitted. I have 195\60R15 tyres fitted at 26PSI.
I am looking at 195\55R15 tyres to replace these, however this would result in a 21mm smaller diameter,
Am I right in thinking this would make the crossmember around 10mm lower than it already is?
Hope all are well.
2015 Yellow +4
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Joined: Oct 2012
Posts: 313 Likes: 1
Learner Plates Off!
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Learner Plates Off!
Joined: Oct 2012
Posts: 313 Likes: 1 |
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Joined: Jul 2014
Posts: 663 Likes: 14
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jul 2014
Posts: 663 Likes: 14 |
Hi,
I fitted 205/65/15 Avon ZV7 tyres to my 2014 Plus 4. No issues with clearance, slight increase in ride-height and they look better in the wheel arches. Also slight improvement in ride comfort (at 22 psi) with the higher sidewalls. No discernible change in handling.205/60/15 were standard on my Morgan alloy wheels -- maybe if u have wire wheels they fit skinier tyres as standard. Hope this helps.
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Joined: Jul 2016
Posts: 240
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2016
Posts: 240 |
Thanks both for confirminng my thoughts and other options!
2015 Yellow +4
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Joined: Sep 2014
Posts: 2,272 Likes: 7
Talk Morgan Expert
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Talk Morgan Expert
Joined: Sep 2014
Posts: 2,272 Likes: 7 |
Unless you want to compete with the car, I would not recommend 55 profile tyres on a trad Morgan.
Agreed that most modern rubber is going to lower profiles and so some of the best buys are found there , but the smaller side wall will hurt the ride quality and not help the handling.
A lot of Morgan owners go the opposite way and fit higher profile tyres (Like Griffo above) this improves the ride quality and will have only a minor effect on handling.
If you experiment with tyres sizes it is bets to use one of the tyre size calculators in order to asses the effect on speedo readings etc , there are ways to reprogramme the speedo if the difference becomes significant.
Andy G
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.
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Joined: Jul 2007
Posts: 27,846 Likes: 765
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,846 Likes: 765 |
The tyres are part of the suspension. The higher wall is better
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Apr 2017
Posts: 1,799 Likes: 4
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Apr 2017
Posts: 1,799 Likes: 4 |
And end up with 65mm ground clearance. No thanks.
Bob
2009 Black Roadster
1999 4/4 2 litre Zetec
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Joined: Apr 2008
Posts: 12,265 Likes: 321
Scruffy Oik Member of the Inner Circle
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Scruffy Oik Member of the Inner Circle
Joined: Apr 2008
Posts: 12,265 Likes: 321 |
Unless you want to compete with the car, I would not recommend 55 profile tyres on a trad Morgan. Nope, neither would I The tyres are part of the suspension. The higher wall is better Absolutely this And end up with 65mm ground clearance. No thanks. Quite. You couldn't even get up my drive with that.
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE
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Joined: Jul 2016
Posts: 240
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2016
Posts: 240 |
It's proving to be a real struggle to find tyres that I am going to be comfortable with. 195\60 seems to be a odd size in relation to whats available.
I haven't seen a tyre yet in 195\65R15 (or 60\R15) that I think I might get on with, I like to enjoy the car and the power increase since the remap, I have had the michelin primacy 4's on the daily and they seems good, but not sure with the mogs light weight!
Does anyone here use 55's on the road or have we all stayed at 60 or gone to 65 for the extra clearance?
2015 Yellow +4
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Joined: Feb 2016
Posts: 8,702 Likes: 416
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,702 Likes: 416 |
It's proving to be a real struggle to find tyres that I am going to be comfortable with. 195\60 seems to be a odd size in relation to whats available.
I haven't seen a tyre yet in 195\65R15 (or 60\R15) that I think I might get on with, I like to enjoy the car and the power increase since the remap, I have had the michelin primacy 4's on the daily and they seems good, but not sure with the mogs light weight!
Does anyone here use 55's on the road or have we all stayed at 60 or gone to 65 for the extra clearance? Standard on same year Roadster with 16" wires, 205/55R16
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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