Super Star Member
Top Poster Of Month
- Jan 6, 2015
- Northeast & FL
- Kubota L48 TLB, Ford 1920 FEL, 8N Ford, Gravely 12 HP "Professional", 48" SCAG Liberty
4x6x16 might be marginally OK for a 1500# bare tractor.
Span load carrying capability comes from the depth of the beam.
4x8 would be better, and 4x10 or 4x12 much better.