i would like to order some new tyres for my M-03R.

In our local Tamiya-comp we can, obviously, only use Tamiya-parts ...
So I'm looking for some Tamiya Rims and A-tyres ...but what insets should I use.
I know these: 50686 (blue inserts) are soft.
..

but what is the difference between 53205 and 53255?

I once bought some Blue ones (50686) and some black inserts that were the same kind of material as those blue ones but a little harder. These were both a soft kind of foam.
Later on I bought some other black ones, which were more rubber-like than the previous inserts I bought, and I prefered thos rubber-like ones.
... but don't know the Tam-number of those M-inserts.


[edit]
Also ...
what is the difference between:
Tamiya M Chassis Super Slicks (#53222) and
Tamiya M-Chassis 60D Reinforced Tires Type A (#53340)
Tamiya M Chassis Slicks (#53215)

in terms of quality, set-up, use ...

thx