I read that on my 98 XJ Sport, factory height is 64" without roof rack and 66.8" with. The questions are:

235x75x15's would be considered the stock tire size for this truck?

What are they referencing this measurement to? Ground to gutter? Ground to rack rail?

I'm getting new leafs and I'm trying to figure out how much lift my truck can take without having the rear end too high over the front, but I need a reference point.

tia

 

I'm not sure where they are measuring to. I think you can measure from the center of your center cap on your wheel to the bottom edge of the stock fender flare. I might be wrong, but I think the rear should be 17" and the front 17.5" from the factory. Someone please tell if i'm wrong. I always thought it was odd for the front to be ridin higher than the back. Regardless of the measurements, I hope that gives you the reference you need.

 

You are right with 17.5 in the front and 17 in the rear. If your flares have been whacked a few times that might be a little off but it will get you in the ball park

You can always just park the jeep on a level lot and look at it to see if its level.

Chuck

 

Like said, measure from center of the wheel to bottom of the flair.

And 235-75-15s are taller than stock

 

Like said, measure from center of the wheel to bottom of the flair.

And 235-75-15s are taller than stock

 

215-75-15's are stock tire size, so 235's will make you a little taller. 17" from the center of the hub to the ground on the front and 17.5" from the center of the hub to the ground on the rear is stock. Any increase to teh rear suspension without identical increase to the front suspension will change the rake your XJ has.

The vehicle height is from the ground to the "top" of the vehicle. Without a rack, the "top" is the highest point of the roof. With a rack, it's the highest point of the rack cross bars.

 

I think he means from hub to fender not hub to ground.

 

235's are not stock size.

215's were stock on only the basic SE's which practically no one here owns. Except maybe the post office Jeeps. LOL

The Sport and up (Classic & Limited) came with 225's.

Even though the total height could be measured at the top of the vehicle.

Tire size or even tire pressures could effect the overall measurement.

The vehicle body rides upon the suspension and by measuring from the centerline of the axle to the body. You can more accurately measure the actual height of the vehicle contributed by the suspension. Vs the suspension AND tires.

That's why it is more accurate to measure from center hub to flare bottom.

 

correct. Thank you. I was typing two sentences and merged them into one in my head, and it came out wrong. Thanks for the correction.

 

Cant you measure from top of your axle tube to your frame rail? I wanna say its like 6 inches in the rear and like 6.75 in the front for stock. I think Im wrong on those numbers so someone please correct them. Because I dont have flares and cant measure that way.

 

Thanks guys

I wasn't even entering tire pressure into the equation. Sounds like between that and tire size that there's too many variables. I like the idea of measuring from the top of the tube to the frame. That seems like the more accurate way. Maybe I'll try this today.

So does anyone know if those #'s are correct?

After all....got cash in my pocket and springs on my mind

Thanks again

 

Absolutely you can measure from the top of the axle tube to frame rail.
Once again you're measuring from the axle to the body.

As is the case with the center hub to the bottom of the fender flare.

The hub to flare is just slightly more convenient to do.

I use a short piece of 2x4 layed against the center wheel cap which extends just enough to line up with the flare.

I lay my tape measure tap on the 2x4 and have the preextended 20"+ length of my tape measure locked and ready to line up with the flare

I also check my tire pressures all around before measuring just to make sure everything is on the level.