we run 76s on ours with a 8 row and if you get in alot of mud it will push the mud up next to the next row. this is on a 8010 which i dont think would be much different than a 5088. i think you would have trouble with a six row in mud with the big tires.

 

my freind has a 7120 has 30.5 tires which is not as wide as the tires that you want he has trouble with a six row head so i dont think that you will be able to run a six row head with those wide tires.

 

how fast you have to go to keep a 7120 full with that small of a head? Anyways, one thing to consider about the bigger tires on a 6 row head, you will hate it if the corn is ever down, or if you plant a little to close one pass. Had a neighbor this fall with 20.8 duals with a 6 row and ran over one row the whole way across the field because the gps had drifted and planted to close by a few inches.

 

1050's on a 2388 & 6 row head

Not sure if a 5088 is wider than a 2388, but here is our 2388 with Michelin 1050 fronts that are about 44" wide & this works great. We could be a few inches wider & still be fine. Getting the rim offset right could be the biggest challenge. To close & you can't get at the machine. To far out & you'll be too wide. rears are 580's & that is as wide as we could go without hitting the clean grain elevator.

Bruce