clockwise

Going to a 4 inch lift.
i have 3.56 gears
and a 5 speed

what size of tire can i run? with least amount of power loss

BLACKSPORT

If you have a manual with those gears then most all should be fine as the manuals came with 3.07s as far as i know. Anway 32s are good with that lift, or you can go 265 75 16s like i did with my 4.5. They are 31.7" tall by 10.4" wide

CFarr44

i got 265-75-16 on mine and i have just a 3 inch, def rub hard on flex but should be good with your 4 inch

mcguyver_xj

only would want those IF he has 16 inch rims fyi to thread starter you would want 265-75-15's if you had 15 inch rims

clockwise

well i did an axle swap and they had 3.55

BLACKSPORT

cool i was just saying that had you done so your power should be fine unless you wanted like 35s haha then you would want to upgrade. but people run all sorts of tires and gears sizes. I think one guy on here has like 36s or 38s on the 3.07s!! w/e floats your boat haha

Rock Toy

The easiest way for you to figure out what tires you should run is to use this formula.

MPH x Gear Ratio x 336 / TIRE HEIGHT x TOP GEAR RATIO = RPMs
example:
70 x 3.55 x 336 / 33 x.79 = 1998.8 rpms
70 x3.55 x 336 / 35 x .79 = 1884.6 rpms

That is the rpms that you would be turning to do 70 mph. I think I would go for the 33s if you do much highway driving on anything but flat ground.