Often, the wheels in modern jet kits are either too thin or too thick to be accurate representations of the real thing. Other times they just lack detail or just do not look right and we have to look to the aftermarket for replacements.
This set from RES-IM provides a very nicely molded set of tires for the MiG-21 Fishbed. The set does not state whether or not it is for early or late versions of the MiG-21 and I have not dug out my Aerofax book on the MiG-21 to see if there are any differences, so I don’t know for sure, but I can say they are a big improvement over the kit tires of my Fujimi MiG-21R kit tires as shown in the photos. The set consists of two main wheels and one nose wheel. The tires are crisply molded with outstanding hub detail that really pops out with paint a wash.