Maximum Tire Size Based on Axles

 The following chart is a guideline / suggestions of the maximum tire size assuming that you do medium to extreme offroading.   If you are only a pavement pounder, then you can probably get away with a larger tire size.

Tire and Axle Chart
 Axle Max Tire Size w/o Locker   With Locker
Dana 35   31"  31"
 Chrysler 8.25 - 29 Spline

33" for stock shafts
35" for 4340 shafts

 33"
Dana 44 35" 36"
Ford 8.8 35" 36"
Ford 9" 35"-39" depending on shafts and R/P 35"-39" depending on shafts and R/P

Dana 60

37" on 35 Spline shafts
40"+ for 40-46 Spline shafts

37" on 35 Spline shafts
40"+ for 40-46 Spline shafts
Dana 70 Same as Dana 60 Same as Dana 60
14 Bolt Same as Dana 60 Same as Dana 60
Rockwells 44"+depending on shafts and R/P  44"+depending on shafts and R/P 

Check out the write up about fitting 35s on an XJ from Petersons

 Feel free to provide feedback suggestions or comments