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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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Forums39
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Jun 14th, 2026
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Joined: Jul 2017
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L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jul 2017
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Hi
Having checked my tyres on my 2014 plus 4, I have decided to change them as they are the original Yokohama tyres. They are currently 195/60/R15 88H. Can I change to a 65 profile tyre to increase the height a little? Will this have an impact on the speedometer? If so by how much?
Also any recommendations for a good summer tyre? Not sure what the factory fit these days? I want a tyre with best grip and low noise rather than all weather as car only really used in the summer.
Andy
2014 Morgan Plus 4
VW T6.1 campervan
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Joined: May 2014
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Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,442 Likes: 133 |
My 2013 + 4 has 185/70/R15.
Keith
2013 narrow bodied + 4 Ruby.
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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 |
Peter (Gambalunga) and others have changed to 65 size. It should work well if you do not go wider. If I recall correctly the speedo was still ok but it should be no problem to add the percentage of wheel diameter to the speedo as it is a digital gear. Here are somewhere threads how to do it easily.
'14 4/4 graphite grey
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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 |
My 2013 + 4 has 185/70/R15. That will work good but 185/70/15 is an exotic size and therefore very expensive. In 195/65/15 you can get the best tyres for small money.
'14 4/4 graphite grey
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Joined: Apr 2017
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Apr 2017
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Try 195/65R15 Avon ZV7
They will make about 3% difference to the speedo reading (The speedo will under read, if it is accurate now!!)
Very good all-rounder with good wet and dry grip but not the best trackday tyre.
And can be had for a very good price if you keep an eye out for offers.
Bob
2009 Black Roadster
1999 4/4 2 litre Zetec
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Joined: Feb 2016
Posts: 8,696 Likes: 415
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
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Hi
Having checked my tyres on my 2014 plus 4, I have decided to change them as they are the original Yokohama tyres. They are currently 195/60/R15 88H. Can I change to a 65 profile tyre to increase the height a little? Will this have an impact on the speedometer? If so by how much?
Also any recommendations for a good summer tyre? Not sure what the factory fit these days? I want a tyre with best grip and low noise rather than all weather as car only really used in the summer.
Your Speedo will underread by approx 3% with that change. As the law dictates they cannot underread by any amount as new it may just leave your Speedo more accurate. Avon ZV7's work well and were factory fit on last Roadsters and current fit on Plus Fours. ETA: missed previous post 
Last edited by RichardV6; 09/05/22 08:02 PM.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Sep 2009
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Talk Morgan Guru
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Talk Morgan Guru
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The Avons are obviously good tyres I do not know them by experience. Alternatively Dunlop Bluresponse are tyres I know and I was very satisfied.
'14 4/4 graphite grey
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Joined: Mar 2021
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Talk Morgan Regular
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Talk Morgan Regular
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I have just put a set of ZV7s on my Aero8 to try them on a different set of wheels to Michelin PS4 I have on my other wheels. I'm not a little concerned by IvorMog's comments as I'm going to the BHM trackway at Goodwood next week and was intending to run the ZV7 as they appear to be more dry rather grip focussed then the PS4 giving better all round performance, particularly in the wet.
Cheers, Paul
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Talk Morgan Regular
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Talk Morgan Regular
Joined: Dec 2018
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Use this website to put in the details of your old tyres and new tyres and you can see the differences. https://www.willtheyfit.com/You will see with the tyres you have and want the speedo is -3.07%
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Joined: Feb 2016
Posts: 8,696 Likes: 415
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,696 Likes: 415 |
I have just put a set of ZV7s on my Aero8 to try them on a different set of wheels to Michelin PS4 I have on my other wheels. I'm not a little concerned by IvorMog's comments as I'm going to the BHM trackway at Goodwood next week and was intending to run the ZV7 as they appear to be more dry rather grip focussed then the PS4 giving better all round performance, particularly in the wet. Paul, you can read a comparison here which confirms IvorMog's comments. However neither are track day tyres if you want the ultimate.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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