Hello, What is the biggest tires I can but on my xl-7 w/out a lift. Thanks

Stock is 235/60-16 = 27.10" tall; 9.25" wide

225/70-16 =28.40" tall; 8.9" wide
235/70-16 = 28.95" tall; 9.3" wide

Some were able to run 235/70's but this causes some rubbing. You may be able to get away with it on the street some, but not off-road with the articulation of the axle and the movement of the axles in relation to the body/frame (twist effect).

I'm running a set of used 225/70's on stock aluminum rims. No rubbing at all, street or off-road.

My goal is to be running a 265/75-16 = 31.65" tall; 10.3" wide. This size is readily available for any type of tire.

Does running bigger tires affect your odometer in any way?

Does running bigger tires affect your odometer in any way?

Yep.

There is a calculator on Wild's site (I think it's Wild's site) that'll do the calculations for true speed based on what the speedo says, but an easy way to get the calculations yourself are:

Original tire height (actual height measured with a tape measure) = O (as in owl)
New tire height (actual height measured with a tape measure) = N
The difference in tire circumference = D

N*pi / O*pi = D

D = the amount of miles you are actually going per mile

i dunno about XL7s but on my sidekick i got 30x9.5, i got soem pics of it if u want them

how big could I go with a 2.5 inch lift.

i dunno about XL7s but on my sidekick i got 30x9.5, i got soem pics of it if u want them

you fit 30" tires in your sidekick, withou a lift!?? how??

My goal is to be running a 265/75-16 = 31.65" tall; 10.3" wide. This size is readily available for any type of tire.

You can cross 265/75/16 off your list unless you do the 2.5 lift  and a 3" body lift.  Had them on my XL and the tire touched front and back of the rear wheel wells.  I'm now running 245/75/16 which just fits in the rear and a little cutting and hammering in the front to fit..
George

Currently, I'm stepping up to 225/75-16 MT's. Should be in soon.  This equates to 29.3" tall, 8.9" wide.  This tire is ~1" larger than my current tires (225/70) with same width so interference shouldn't be too much of a problem. About the only place I see intereference is the front portion of the front splash well. I seem to have better than 1/2" on the back side of the front tire and plenty room in the rear, although full compression something could rub.

I played around last night with the passenger rear. I placed a Jeep extended bump stop to work with the Jeep spacer on the stock shock and spring. I also 'released' the parking brake from it's holders on the frame and gained 1.5-2" of further droop at the tire. My measurements are at home, but equate something like 5" more in shock extension to get full droop (spring distance to be 18"). And this full droop is with no tire, no shock, no spring, loosend parking brake, other tire on ground and the rear brake line tight. Under full compression of the same scenario, the bump stop compressed fully into the raised block, the spring distance is 8" so this provides 10" of spring travel. Again, no weight on axle, other tire sitting on the ground. Real world will provide better numbers. Took some pics and info.

The biggest lift kit I've seen is 2.5(susp.) Is that the biggest they can make.

You can cross 265/75/16 off your list unless you do the 2.5 lift  and a 3" body lift.  Had them on my XL and the tire touched front and back of the rear wheel wells.  I'm now running 245/75/16 which just fits in the rear and a little cutting and hammering in the front to fit..
George

So you tried to sneek that 3" body lift in? Not letting anyone know you accomplished it on the XL-7.
I have a set of poly urethane body blocks which I'll be cutting to 1.5" height as well as cutting in half to use epoxy on. Any standard 2-part urethane poxy will work.