[72BlckButy]

Sorry reds_racing... I didn't measure from the center of the spindle up, I measured from the ground up. Here's what we came up with for the two different wheel setups:

235 75R15 (all 4 corners) on a 15x7 (f) and 15x8 (r)
Driver's Side Front: 28"
Driver's Side Rear: 29"
Passenger Side Front: 28 1/4"
Passenger Side Rear: 28 3/4"

255/40 20 (f) 295/40 20 (r) 20x8.5 (f) 20x10 (r)
Driver's Side Front: 28 7/16""
Driver's Side Rear: 29 5/16"
Passenger Side Front: 28 1/2"
Passenger Side Rear: 29 5/16"

Now the tire difference between your tires (265/70 15) and my initial tires (235/75 15) are as follows:

265/70 15
Sidewall: 7.3"
Radius 14.8"
Diameter: 29.6"

235/75 15
Sidewall: 6.9"
Radius: 14.4"
Diameter: 28.9"

So overall your tires are roughly a .5" taller.