There are no hard limits. Boeing has issued some recommendations and have tested the aircraft, but those results depended on how strong the winds were during the days of testing. It is up to each operator to figure out how skillful they think their pilots are
For our company: B738 with or without winglets on wet runway = 34kts (TORA/LDA >2.000m) and 30kts (TORA/LDA< 2.000m)
Decrease by 0.5kt per metre of rwy width reduction below 45m.
