I have a 93 XJ ax15. Everything is bone stock. 4 door. Dana 30 front 35 rear. I'm not sure what my gears are (if anyone can tell me that would be great!). I just got it and It needs plenty of work on the interior so I haven't driven it much. My questions are what is my mpg now and what could it be after 2" coil spacers? And if there are any other complications for lifting such as the speedo. Thanks!

 

If no one has swapped gears it should be 3.07's. So far as the lift goes, the lift doesn't effect the mpg, the tire size does. So if you are going with a 2" lift and keeping the stock tires you wont have a noticeable change in mpg.

 

The lift isn't really gonna change much, just a lil more drag. Your mpgs start going to ish when you go bigger tires and don't regear. Here is what I would do depending on driving style. To keep it in stock powerband. 31=3.73 33"=4.10 35"=4.56. If you want more power for offloading, 31"=4.10 33"=4.56 35"=4.88

 

I've debated about different rims and tires. I think I'll keep the same size tires but get ones with just a little more tread on them, different rims and call it good. I'm not usually concerned about mpg but a 60 mile round trip to work and back everyday concerns me just a little bit! Lol