Tyre resizing

[Adawang]

factory size 235 45 17, rolling radius 321.65 mm, circumference 2020.98 mm

change to 215 50 17, rolling radius 323.4 mm, circumference 2031.98 mm

circumference difference 11 mm +0.54% increase

rim width 7J

 

think i will get less rolling resistance due to tyre width being narrower

resulting in better fuel economy, probably better acceleration???

speedo will read 70 mph , actual speed 70.38 mph

 

Impt questions-

1)Do I lose out in handling & by how much?

2)Is it a safe to do?

3)pros and cons

4)ride quality?