The rear wheel is 700, front wheel is now a standard size, 24". The original 24" wheel can be included, I was unable to find a tire for it, as Terry bikes came with a very rare proprietary size of 530 24" tire... Not the standard 507 24", or the rare 540 24" x 1 3/8", but an even rarer one that even local bike stores do not carry, or were able to order.