Right. Technical question time.
Trying to pick a tyre size for a 5.5 inch wide 15 inch wheel. The OEM size is 175/65/15.
But this size is:
a) Rubbish in terms of tyre availability and my choice of tyre is not apparenetly available in this size
b) 1.27% smaller in rolling radius from the existing factory fit 205/45/17.
Instead, I am considering 195/60/15. This tyre size is:
a) Excellent in terms of tyre availability
b) Just 0.21% smaller in rolling radius from the cars existing tyre/wheel size.
Presumably I can therefore safely fit the 195 section tyres but I'm a bit worried about the rim width - it's not going to look silly and distorted, is it?
I'm really not sure why the manufacturer picked 175/65 given it's so different to the larger wheel sizes offered in terms of rolling radius compared with 195/60.