I haven't yet fitted the 195/65 R15 tyres yet but intend to do so at some point. Apart from more ground clearance the larger diameter tyres fill the wheel arches better so aesthetically the car looks better. I have done a bit of research on the subject and do not believe there is any technical reason why they can not be fitted. The 4/4 runs taller and narrower tyres and the Plus 4 SS fits fits the wider and taller 205/65 R15 tyres but they can not be fitted to the Plus 4 except on original order because the mudguards fitted are 10mm wider (like the Roadster). The advantage for a Plus 4 ordered with 205/65 R15 tyres is that it can use a 4/4 wheel and tyre as a "space saver" spare.

You can see from the table below that a Roadster would also gain from fitting 205/65R15 tyres but one would have to be very careful that the tyres did not hit anything on full bump and full lock. Depending on the current suspension height the fitting of the Suplex suspension system can be used to gain height which in turn would give more space for the taller tyres. The combination of tyres and the Suplex system and tyre choice can be used to achieve better ground clearance whilst at the some time improving both road comfort and handling; this is my eventual aim. Race track considerations, where low ground clearance is acceptable, are a different thing altogether.

.........................................Radius
Plus 4 – 195/60R15.................307.34 mm
Plus 4 Sport – 205/65R15..........323.59 mm
4/4 Tyre – 165/80R15..............322.32 mm
Roadster – 205/60R15..............313.43 mm
Proposed Tyre - 195/65R15........317.24 mm


Please keep in mind that the space for the spare may be too tight to fit a taller tyre and in any case the mounting bracket would probably need to be adjusted. After fitting the taller tyres it would be wise to check that they did not contact anything on full bump and on full steering lock. Also the speedo would have to be recalibrated, there is some discussion of speedo calibration in other threads. Naturally all this is just my opinion and anyone fitting alternate tyres to those recommended by Morgan must do so on their own responsibility.

Peter

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