I've read through this thread and the primary reason it looks like most users upgraded overall tire height is for ground clearance and aesthetics. Which, for those with 30's switching to 32's it would only effectively be 1" of lift. I don't think this has been addressed yet in this thread:
1) Have users experienced noticeable engine speed reduction at cruising speeds (say 40-50mph) when going with a larger tire height? I estimate going from 30"-32" at 50mph this may only be ~400-450 RPM using some online calculators. This may be negligible as cruising at 50mph w/ 30" tires I'm at about 5800 RPM, so only about an 7-8% engine speed reduction and this doesn't factor in clutching. I ask as I spend a lot of road time (40-50 MPH) going trail to trail or around town.
2) Does a clutch kit assist with above? I.E. would this bump down engine speed for a given wheel speed or is it the opposite?
3) From searching, BUDS can be used to recal the speedometer for larger tire size. Do any of the popular tune programmers available offer speedometer recal (EVO, Vivid, etc.)? I haven't seen this listed on any of their sites. This is a common feature w/ gas and diesel automotive programmers. if the stealer is going to charge you a few hours to recal your speedometer you are most of the $ towards buying a tune with a programmer.