RF01 Pro Grip sizing

[double13]

Hi,

I'm an old timer who learned tennis with a Prostaff 85 back in the 1990.
I've used other rackets since then, always 4 1/2 grip size.

But Wilson or Prince grip shapes are my favorite.

Now my local shop's demo rackets are always 4 3/8 or smaller so I always put extra overgrip to demo.

I haven't demoed the PS01 Pro yet but when I grabbed it in my hand, the size was 4 3/8 with ONLy one over grip, but the size felt like 4 1/2.
So I measured the demo's grip size by circumference (using a yarn), and it was the SAME size as my PS 85 at home.

So my questions is,
does anyone know if Wilson has increased their grip sizes in recent years, so that 4 3/8 got bigger and close to 4 1/2?

OR is the RF01 Pro just happens to have a bigger grip size?

For other racket brands, a demo 4 3/8 size + 2 og = 4 1/2 for me.

I am asking this because I plan to buy a PSX but they don't have a demo.

 

[Grafil Injection]

Most over-grips are between 0.5mm and 0.6mm thick, which if you do the maths equates to an increase in the circumference of 1/8th inch, or 1 grip size. They're very kind to help us out with that. However, base grips can be of slightly different sizes to start with, especially old leather grips, so that can make a difference.