Stock 2WD '93 DD. AW4. 4.0L. Now on P225/75R15s. Open stock 8.25 rear end with OEM gears (what's that? 3.55?). I haven't checked the mileage on the new tires. With LT235/75R15ATs it got 18mpg (50/50 city/highway daily commute).
16-17 city, recently 22 highway, on 30x9.5s, 3" lift, and basket rack. Took the basket off a few months ago and had no effect on gas. I did just do a complete tune up and replaced o2 sensors. I have been babying the pedal though.
I drive her daily..... her are the details....
4.0L AX15 tranny NV231 TC
225/75/R15 tires (allterrain/all season).
118,000 miles
K&N drop in filter
Dynomax Cat back
Accel coil
Summit cap/rotor/wires
Autolite platinum plugs
Combustion chamber cleaned
etc. etc.
I am getting 20-21 city
24-26 Highway
worst tank was 18 lots of city and wheeling.
I am still relatively new to the xj though. I am sure a dedicated trail ride will knock it much lower than the 18.
I am getting 25 mpg on my comute pretty consistantly though.
THIS creates a dilema. My last Jeep was a ZJ lifted and wheeled at easter jeep safari grand slam etc.
I want to do a small OME lift with 30-31 tires. But this is a daily driver and I drive 50 miles a day. I need to get reasonable economy.
Before I get the wise cracks about this is a jeep get a honda understand. I live in the country. I live on five acres and have to climg up a steep dirt road to get to my house when it rains and in the heavy winters unless it is a 4x4 she isnt going to do it..... so any ideas what tire size I could do without bonking mileage too much......:sunshine:
89 Laredo 4.0L 3.55 w/225-75-15's & just recently installed a 32gal. tank for my weekend cruises of approx.~ 600 miles each way.
This past weekends trip was 652mi. one way at 70-75 & got 20mpg, the return trip at 60-65 netted 24mpg. All of this with 500lbs of camping gear & a 21cu.ft. Thule pod on the roof.
These older XJs are some workhorse for sure!!!
'87 XJ Limited, ~ 265K miles, daily drive ~ 72 miles round trip, ~ 21 to 21.5 MPG - mostly 55mph to 65mph, LTX/AT 235x75R15 tires (~ 95K miles on them ! with more to go !), with air-tube and riser-plate, flow-thru Dynomax, and CraneCams Hi-6S multi-spark box w Jacobs Torquer coil + Champion-Truck plugs gapped ~ .047 (but, I need to change the distributor-cap & rotor every ~ 10K miles) - Runs great !! with very very low emissions (oh yea: 4-spd automatic w the dash-board power-button ON, but I don't know the gear ratio).