These are only common lift/tire combinations that seem to work well together. Some setups may rub in off-highway situations, but most allow for clearance. Any wheel that is 'not recommended' for that particular height can be run, but is not advisable.
Metric Tire Size Conversion
OBS Trucks (88-98), OBS SUVs (92-99):
Stock height
- 285/75R16 & 32/11.5R15 on Stock wheels or 16x8/15x8 (possible torsion bar crank); 16x10/15x10 not recommended
- 305/70R16 & 33/12.5R15 on Stock wheels or 16x8/15x8 (torsion bar crank and light trimming); 16x10/15x10 (torsion bar crank and heavy trimming, or cutout flares)
3" Suspenion Lift or Body Lift
- 305/70R16 & 33/12.5R15 on Stock Wheels or 16x8/15x8; 16x10/15x10 (possible torsion bar crank and light trimming)
- 315/75R16 & 35/12.5R15 on Stock Wheels or 16x8/15x8 (torsion bar crank and heavy trimming, or cutout flares); 16x10/15x10 not recommended
4" Suspension Lift
- 305/70R16 & 33/12.5R15 on Stock Wheels or 16x8/15x8; 16x10/15x10 (possible torsion bar crank and light trimming)
- 315/75R16 & 35/12.5R15 on Stock Wheels or 16x8/15x8 (torsion bar crank and heavy trimming); 16x10/15x10 (cutout flares)
6" Total Lift (3" Suspension Lift + 3" Body Lift or 6" Suspension Lift)
- 315/75R16 & 35/12.5R15 on Stock Wheels or 16x8/15x8; 16x10/15x10 (possible torsion bar crank and light trimming)
- 36/12.5R16 & 36/12.5R15 on Stock Wheels or 16x8/15x8 (torsion bar crank and heavy trimming); 16x10/15x10 not recommended
7" Total Lift (4" Suspension Lift + 3" Body Lift)
- 315/75R16 & 35/12.5R15 on Stock Wheels, 16x8/15x8, or 16x10/15x10
- 36/12.5R16 & 36/12.5R15 on Stock Wheels or 16x8/15x8 (torsion bar crank and light trimming); 16x10/15x10 (torsion bar crank and heavy trimming, or cutout flares)
9" Total Lift (6" Suspension Lift + 3" Body Lift)
- 315/75R16 & 35/12.5R15 on Stock Wheels, 16x8/15x8, or 16x10/15x10
- 36/12.5R16 & 36/12.5R15 on Stock Wheels, 16x8/15x8, or 16x10/15x10
- 38/15.5R16 & 38/15.5R15 on 16x10/15x10 (torsion bar crank and light trimming)
NBS Trucks (99-03), NBS SUVs (00-03):
Stock height
- 285/75R16 on Stock wheels or 16x8 (possible torsion bar crank); 16x10 not recommended
- 305/70R16 on Stock wheels or 16x8 (torsion bar crank and light trimming); 16x10 (torsion bar crank and heavy trimming, or cutout flares)
3" Suspenion Lift or Body Lift
- 305/70R16 and under on Stock Wheels or 16x8; 16x10 (possible torsion bar crank and light trimming)
- 315/75R16 on Stock Wheels or 16x8 (torsion bar crank and heavy trimming, or cutout flares); 16x10 not recommended
4" Suspension Lift
- 305/70R16 and under on Stock Wheels or 16x8; 16x10 (possible torsion bar crank and light trimming)
- 315/75R16 on Stock Wheels or 16x8 (torsion bar crank and heavy trimming); 16x10 (cutout flares)
6" Total Lift (3" Suspension Lift + 3" Body Lift or 6" Suspension Lift)
- 315/75R16 on Stock Wheels or 16x8; 16x10 (possible torsion bar crank and light trimming)
- 36/12.5R16 on Stock Wheels or 16x8 (torsion bar crank and heavy trimming); 16x10 not recommended
7" Total Lift (4" Suspension Lift + 3" Body Lift)
- 315/75R16 on Stock Wheels, 16x8, or 16x10
- 36/12.5R16 on Stock Wheels or 16x8 (torsion bar crank and light trimming); 16x10 (torsion bar crank and heavy trimming, or cutout flares)
9" Total Lift (6" Suspension Lift + 3" Body Lift)
- 315/75R16 on Stock Wheels, 16x8, or 16x10
- 36/12.5R16 on Stock Wheels, 16x8, or 16x10
- 38/15.5R16 on 16x10 (torsion bar crank and heavy trimming)
*Note:Thanks to those who double-checked everything and added more info.