mrpeterclark,
35s are nice but 37s are nicer, 40s are nicest! To fit 37s on 2007-2010 Suburban 1500 with minimal lift you will need 3" body spacers kit, F150 torsion keys or Atomic FAB coilover kit up front, 3" coil spacers in the rear, same length shocks up front and 1-2" longer shocks in the...