They look like Goodyear 14.00X20 MVT tires mounted on the stock 9.00X20 wheels. You can fit the 14.00X20 (46" tall) tires on the M35s if you lengthen the dog bones and slide the rear axle back slightly. Not the safest configuration, most people frown on running the wide 14.00X20 tires on the narrow stock wheel and also dislike lengthening the dogbones, but my first M35A2 came that way and it never gave me any problems.