I've never split or burnt either, but Sycamore and London Planetrees are very similar. If Sycamore splits hard like some have mentioned, maybe it is London Planetree: Plantanus x acerifolia
Good Info on differentiating the two:
ID Summary
although American Sycamore (Platanus occidentalis) and London Planetree (Platanus x acerifolia) are often difficult to tell apart at first glance, the following features, especially in combination, can be used to differentiate between them:
London Planetree is now the preferred choice of nursery growers due to its relative Anthracnose resistance, and is found much more often in an urban site where it has obviously been intentionally transplanted
Sycamore is native to Eastern North America and is a predominate tree found along streams, rivers, bottomlands, and neglected wastelands, while London Planetree rarely escapes to the wild
London Planetree has relatively smooth bark, with an inner bark that is primarily olive green, while Sycamore has a bark that strongly exfoliates in mid-Summer to expose an interior bark that is a mottled combination of white, cream, green, and gray
London Planetree usually has its fruits borne as two per stalk, while Sycamore usually has its fruits borne as one per stalk
Sycamore is susceptible to leaf and stem Anthracnose in Spring, while London Planetree is prone to cankerstain (a fungal disease of the bark and cambium) and frost cracks (originating as fissures of the bark and cambium in Winter)
London Planetree is quite tolerant of poor soils and aerial pollution, whereas Sycamore prefers rich, deep, moist soils and no pollution
only London Planetree will develop many small knobs on its smooth trunk with maturity which are not associated with healed-over branch stubs, while both Sycamore and London Planetree may each have large knots on their trunks with maturity that represent sites of previous branch attachment
USAGE
