My red maple looks well in terms of leaf cover at the moment, but I am told it has issues that could be problems in future. The main trunk divides into two about 3 ft off the ground and there is a crack going down from this. One trunk crosses over with a main branch further up. This tree does not appear to have ever been pruned and it is now quite large. It also has a root damaged during some construction work.
This all matters as we are having a new driveway and entrance, and keeping the tree will involve a big workaround - I need to be sure it is worth saving!