Hello riders, I am new to the board and the cfmoto machines. I have owned my zforce 800 ex eps for a cpl months now and just cracked a rim. I am looking into purchasing new rims and deciding on a offset. I noticed alot of you guys are running wheel spacers and wondered if you have had any problems. The wheels im looking at will put the offset negative just a tad more then the 1.5 inch spacers put the stocks. They are 2.5" inner and 4.5" outer just looking for some opinions and better knowlege then mine. Thanks

most people that are running spacers are the trail guys because they have a skinnier machine. I don't see the need for it on an EX but it will add more stability. If you don't have width restrictions where you ride it would be fine. It will add more stress to your wheel bearings and knuckle bushings.

[2015 Z Force 800 53/Trail EPS]

Yeah and although any wheel spacer adds more side load to a bearing staying with 1.5" and less most are not reporting any short term problems. On the same note, when picking an offset for any IRS machine, it is important that the first number be equal to or greater then the second number..ie the first number being the negative or inset number and the second being the positive or outset number. So anything like 5+2,4+3, 4+4,4+2, 5+3 are all fine where 3+4,2+4,2+5...ect would not be.

Ok thanks for the info guys and I had read on some previous post and saw that the person who posted the fact that you should stay with the inner number greater then the outer was running spacers which would offset his rims more on the outside causing his inner offset to be smaller then outer on fronts. So that kinda confused me then these wheels are advertised as irs wheels so that kinda threw me off too. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F272395137831

Also am i correct in thinking that if 1.5 inch spacers are added to the front stock wheels it will become a 2.5/4.5 offset?

[2015 Z Force 800 53/Trail EPS]

Essentially with spacers you are just moving the wheel's mounting surface a distance away from the hub's mounting surface which just moves the wheel outward. The load on the new mounting surface is the same and because offset is measured from the wheel's mounting surface, the offset is also is the same. What does change is how the bearing receives the new loading which is now farther away and putting more side load or cantilever on it. That's why keeping it to a minimum is recommended.

Those wheels on ebay either are for the rear of an SRA or... they are confused. Don't get that offset. Bearings aren't the only things that are effected. Add-in ball joints, knuckle, a-arm bushings and steering linkage parts to the list.

I have a question I searched but no luck...
I know that the Z800 has 14'' wheels but what is the with and what bolt pattern? And are they the same for the Z1000?
Thank You!!


HDHP

[2015 Z Force 800 53/Trail EPS]

I have a question I searched but no luck...
I know that the Z800 has 14'' wheels but what is the with and what bolt pattern? And are they the same for the Z1000?
Thank You!!


HDHP

Lol..good question. These stock wheels are their own design and are slightly different then others on the market..first, they are 4/110 bolt pattern with lug-centric or lug centering hubs which just means they use the tapered lug to center on the hub not a flange built onto the hub. The width is not exact but the rears are close to 8"s wide while the fronts are between close to 7"s wide. I forget the offsets but they are in millimeters and are stamped on one of the spokes. There is a converter you can use. We have a thread on these somewhere. ...found it. Here it is:

http://cfmoto-forum.com/800ex800/wheel-offset/msg15254/#msg15254

OK, I will check it out!

Thanks, NMK!!!


HDHP

I have a trail and I don't run spacers at all and don't intend to, for a few reasons:

One, the trails around here are often narrow and in many instances are old restored or barely kept passable mining and logging roads maintained by users to be just ATV width. Adding a total of four or five inches to a machines width would make some trails off limits to such a machine (or risk tearing a sidewall or having a wheel half-off a trail with bad consequences for slipping right off),

Two, last year I had that trail model at some damned spooky angles off camber and it is surprisingly stable just the way it is. Adding a couple inches on the low side, when at a side angle, has less effect than you thought. At an extreme example of 45 degrees for instance, just for the sake of the math, a two inch spacer only offsets the track to the effect of one inch but to earn this your machine is two inches wider on each side, or four inches, all the time. That's not an issue if you always have wide places to ride of course.

Three, the suspension of both trail and EX models are engineered to place the vertical load directly and exclusively on the springs, and the suspension bushing points serve just to locate the wheel and keep it located along its four link arc. As soon as you put offset wheels or spacers on, the bushings come under pressure. The top suspension arms are under compression and the bottom ones are under extension all the time.
Also because the wheel now has more leverage against the shock/spring unit, that shock/spring is now working harder and the bushings are going to be wearing out faster.
To appreciate this, imagine you have two foot long wheel spacers. It's easy to see that just sitting there the weight of the machine is compressing the top arms and stretching on the bottom ones.
If you look from the rear you can see that in stock form the knuckle housed wheel bearings are located right in the center line of the tires tread center, in order to make the side load forces neutral on the suspension and frame, and to make the shocks do the work of holding up the machine as designed.

These are not deal breakers of course or people would not be able to run these spacers, but just points to ponder when weighing if it's worth it or not.