The rim is quite the "official" one, with 52mm diameter and 26mm wide. Sourced tires should fit.

I called it 0 offset as is the same one as the carson wheels I have. The distance from the ext of the rim to the surface where the 12mm HEX relays is 10mm. I created also the +2 +4 -2 -4 offset versions of the rim which are available in this publication.

So you will find here 5 different offset rims, but also 4 different types of tires.

TARMAC TIRES 65mm 1Wall

The Tarmac Tires are something like Michelin Pilot and the measures are quite real, I mean those 65/20 - 19 would correspond to a 65mm diameter, 20mm of contact zone and 19" rims. Total width of the tire is 26mm and fits the rim with quite and effort. The rim must be printed with very good inter-layer adhesion to resist this. The tarmac tire must be printed solid because there is no space for any infill. Maybe you can accommodate inside a soft compound but you probably won't need it as the tire in TPU is quite hard... if you can print them in TPE or any less than 80A shore material you will probably reach a good flex result. I tested them over ceramic indoor floor and over concrete and tarmac and they slick a bit but feel quite usable.

GRAVEL TIRES 69mm VOID

The Gravel tires are bigger. The numbers this time doesn't fit at all, as they are 69mm total diameter, instead of 65mm... These 69mm are maybe too much for some standard on-road cars but maybe more useful for rally type racing cars (Real 1/10, not those false 1/10 commercial ones which use 1/10 buggy hardware...) The thing is you can print these tires very thin without infill (air as infill) and they really feel soft and grippy :) As you can see, the pattern has a lot of points to create better adhesion and the shape of the section of the tire is a little "ballooned" but soft so when the car sits over them the grip area increases and it's quite good...

GRAVEL TIRES 69mm SOLID

Like previous ones but this time there is no internal air "donut" so you can print it with infill if you want, and as thin walled as you want/can

GRAVEL TIRES 65mm SOLID

Same than previous ones, but now these ones really fit the size.

3D printing settings

Remember to look for the best perimeter thickness to avoid extra retractions.

If I remember correctly they can be printed with 0.2mm layer height and 0.4mm perimeter thickness. I remember using 0.39...

Use some little negative horizontal expansion (something like -0.01 or -0.02) if you want to be sure to be able to fit the tire over the rim.

I think I used -0.01 for cheap TPU and -0.02 for cheap PLA.

Both the rims and the tires can be printed and are designed to be printed without supports. Be sure your machine can handle overhangs near 60º correctly, in TPU and PLA if you want a decent result.

MyRCCar WRC Wheels 1/10 Complete, 5 Rims, 4 tires On-Road RC