look at you all learnen the general public......

Thanks Cliff

 

Well said, that information is spot on. The only thing I would add is that many companies often refer to offset in millimeters, so you will see a measurements like +30mm offset, or -10mm offset.

Also, one thing to note, offset and backspacing are similar but quite different. Offset is generally measured to the bead seat of the rim, where as backspacing is measured to the inside edge of the back side of the wheel. For instance, using the example above, a 12x8 4+4 would be a zero offset. Technically speaking, the backspacing on that wheel would likely be about 4.5". That is because you need to take into account the thickness of the lip of the wheel.

Any questions?

 

My '17 1Kxp Rock n trail has 6x14F, 8x14R beadlock stock. 30" pro armors. I want to do 32" tires in future. For even wear I want to be able to rotate tires. Looking at some 14x8 4+4 wheels (bead lock). Based on measurements my front and rear will definitely be wider (4"?). My main concern is clearance around the front suspension when the 32's go on. My buddy has 15x8 4+4 on '15 1kxp and claims no issues with his 32's. Local shop pushing 14x7 4+3, however, since the rear is already 14x8, figure why not keep it that way. Looking for input.?

 

I just know it gets confusing when different people use the same term to describe something different...

 

:notworthy::notworthy:

Thank You Clifford for yet another informative post!!

You are the Professor! :icon_rockwoot:


And BTW, thanks for the links in your sig....more than once that's saved my bacon when looking for an answer to something I've run into. Just this past weekend as a matter of fact.

 

Very informative - thank you!

 

Thanks Cliff

Good Information for ALL


FUN being an Educator, isn't it

 

The forum is great for sharing info and learning!

 

Big thanks

 

Thanks Cliff thats good info!

 

Great info, add the standard offsets for the RZR wheels and make it a sticky.

 

I know this is an older posting, but it is great.
I looked a long time to find it.
Any chance of making it a "sticky".
Good information.
thanks

 

The factory RZR wheels measure 12x6 in the front with a 4.5" backspacing. The rears are a 12x8 with a 6-7/16" backspacing. Remember that backspacing refers to a measurement to the absolute back edge of the wheel, not to the bead seat area like an offset measurement would. According to the back of the wheel the offset is +26.2mm on the front wheels, and +50mm on the rears.

Doing the math for the front and going off the numbers I stated above, a 26.2mm offset means the wheel center that bolts to your UTV is offset by 1.031" from the theoretical center line of the wheel. Take that dimension and add in the 3" of wheel from the theoretical center line to the back bead seat of the wheel, then add the 7/16" thick wheel lip (7/16 = .4375"), and you end up with a backspacing measurement of 4.468". Back tracking to above, I said the backspacing was 4.5", I guess I was off by .038". For reference, .038" is the thickness of about 3 typical business cards.

Hope I didn't just confuse anybody, I tend to ramble a bit.

Bones

 

I am looking to put 27"-9"14" on front and 11" on rear.. I have a 2011 50" rzr LE... I know I will have to purchase rims.. thats the ?..
exactly what offset..

I believe that 4+3 will work.. If someone knows this will rub let me know
14x7 front
14x8 rear
how does that sound... recommend different size for rims let me know.
not planning on a lift, not real concerned about being outside of 50" but would like to stay close to it.. I have narrowed tires down to a couple of choices. Radial Reptiles or ITP Terra-Cross.. leaning toward Rep...
I have the terra cross on my King Quad 750 14" rims and love them, but want to try something different this time around.. any info on this matter would be very appreciated... thank you

F.Y.I. This Forum ''ROCKS!" :locked:

 

Are all rzr stock rims the same? I have a 570le and have an opportunity to buy some 800s rims. Are they the same? What about 900xp? I realize the tires are different but what about the rims?

 

This question is for Bones, I am looking to put new wheels on my stock 2012 900xp and would like to have a little more space in the rear from the trailing arm. would I use a 12 X 7 in front and a 12 X 8 in the rear and with what off set?

 

The stock wheels on the 900 are basically a 12x6 4+2 up front and a 12x8 6+2 rear. I normally run the same 4+2 up front, and go with a 12x8 5+3 in the rear. Or if you'd prefer the 7" wide front then I'd go with a 4+3.

For that matter we also have a 12x8 4+4 and 3+5 available for the back.

 

Thanks Bones. Very helpful, Are you having any good sales coming up on OMF wheels?

 

Nothing really planned at this time, but as a member of the forum we'll find a way to hook you up whenever you decide to buy.

 

so my question is if I go to an after market rim of a 4-3 over stock rzr 1000 rim how much wider will it be?

 

That's difficult to answer. When you hear offsets listed as a 4+3 or 5+2, that basically is a throw-over from the old days when most ATV wheels were built in 2 halves. A 4+3 meant you had a 4" inner wheel half and a 3" outer wheel half.

Those are good numbers, but they leave a lot of information out. It doesn't really tell you what the wheel thickness is, or the lip thickness, so it's hard to compute an actual offset or backspace.

The factory front XP1K wheel is a 14x6 wheel with about a 5.5" backspace, meaning there is very little wheel hanging to the outside. If you put a 14x7 4+3 wheel on there, then I would expect you to roughly pick up 2-2.5 inches per side. 1" of that comes from the increased width of the wheel, and the other bit is thanks to the offset.

Our NXG1 wheels are designed specifically for the XP1K, they're a 14x7 wheel with a 5.375" backspace. Almost the same backspace as stock, but in a 7" wide wheel.

 

Good info

 

Quick guide for our wheel styles in case anyone has any questions.

Or you can check out our full description page here: MSA Wheels Offset Explained

 

Great info! Thank you. Just purchased the 2015 xc and wondered exactly how the rim made it 55" and can go to 50". I figured it was this or wheel spacer. Now I know. Thanks!!!

 

Quote: The factory RZR wheels measure 12x6 in the front with a 4.5" backspacing, the rears are a 12x8 with a 6-7/16" backspacing.

Question: So If you go with 8" @ 4/4 on fronts, that's a 2" wider wheel, or basically 1" wider inward and 1" wider outside (2" wider across the front)? 10" Rears 5/5, 2" wider across the rear?

 

When referring to offset as a "4+4" it can be difficult to compare that to a true backspace measurement. Assuming everything is fairly standard, a 4+4 will have a backspace of about 4.5", so you would gain the 2" of extra width all to the outside, so 4" wider total.

In the rear a 5+5 should have a backspace of around 5.5", so you'd actually pick up about 3" per side, or 6" total.

All of those dimensions are based off assumed numbers though, it doesn't factor in a wide variety of variables, so your exact numbers may vary.

 

Bump