The Marui Ninja 1/10 rc car has one characteristic it shares with the Marui Samurai : front and rear rims are not with the same diameter, making it difficult to find harmonized tires configurations working with both front and rear. I applied the same principle than with Samurai rims, to use same diameter tires, but with a visual trick to make the front rim diameter looking bigger than the rear. I'm doing this mainly to allow people to run with available tires on the market while keeping the car as close as possible from the intended original design...
3 sets are available in this publication :
As usual, those are free, but if you like this work, there is my paypal account in my profile, so you may offer me a coffee or a contribution to any of my projects :-)