Anyone else noticed that the Plus Four has a now a massive 'aspect ratio' i.e., 205/60 R 15 91V. Plus Six's are 245/40 R 18 92Y, this is one massive difference?
The plus 4 on 15” rims has a diameter of 24.7” whereas the plus 6 on 18” rims but with low profile tyres has a diameter of 25.7”, a difference of just 4.18%.
So not a huge difference in overall gearing, and of course the plus 6 has a few more horses to move it along!
