200x57 (7.875x2.25) -> check for sufficient clearence between seatstay and seattube at full bottom out before riding. A 200x57 has more stroke than original (original = 54mm stroke), so you need to make sure, that your frame can accommodate the extra rear wheel travel without any interference. Don´t forget to consider, that your frame will also flex during hard bottom outs. Make sure, there is enough space for all situations. If your frame does not allow the full 57mm of stroke, you need to reduce it accordingly.