Will 18x8" rims off an 04 XJ8 fit on my X Type?

 

Come on guys! Give a girl some help here. Ive read through the FAQs on this but dont see this specific combo. I know its important but dont know about the spacing and offset and wheel fitment and whatever....please ;-)

 

Queen, looking around, both vehicles use the same bolt pattern. So, you are good there. The real question is what the back spacing is on the two sets of rims. What I would recommend that you do is to pull off 1 of your rims, lay a ruler across the back side of the rim (in contact with the metal part of the rim) and then measure from the bottom side of the ruler to where the rim contacts the hub. Write this measurement down. Now, repeat the same thing on the XJ8 rims. As long as the two measurements are within 1/4" of each other, you will be fine. If you are getting something outside of that, then I would recommend asking the person if you can test fit the rims and take them out for a few mile test drive. This will let you know if you are going to have a rubbing issue or not.

Looking at aftermarket rims, the recommended back spacing is effectively the same. So, you shouldn't have an issue. But, this is looking aftermarket stuff, not factory stuff. So, there could be a difference.

 

never new that

 

Thanks Thermo! Youre a wealth of information as usual. I will do that this week, and hopefully Ill soon be changing my sig pic to reflect my babys new shoes. ;-)

 

Disco, there is all sorts of information that you can gather for rims to "test fit" them on your car and see if they will work. Backspacing measurements are a lot easier to understand and is what I would recommend for the common joe. Offset is a bit more meaningful if you know what it means.

As I mentioned above, backspacing is simply the space between the backside of the rim and the surface where the hub attaches to the rim. This is an important value in that if you get too little, the wheels tend to stick out the side of the car and also puts added load on the wheel bearings. Getting too much back spacing and you run into issues with the wheels contacting the suspension and also putting added load on the wheel bearings.

Where offset is simply the relative difference in spacing between the center of the rim (side to side) to the surface where the hub attaches to the rim. This is vital in that it is telling you where the center of the bearing is in relation to the hub. Ideally you want the center of the rim (side to side) in line with the center of the bearing. This ensures that the wheel bearing receives minimal loading side to side and all loading is in the vertical direction. Too much side to side loading and you can trash a wheel bearing in a heartbeat. This is why guys with oversized wheels on their 4x4 trucks are always replacing wheel bearings.

If you want to know more, just ask or there are tons of websites that go in to great detail about what backspacing, offset, etc mean and how to use them to pick the correct wheels for a vehicle.