I'm an idiot. What do these numbers mean?

I think it's the other way around ....... First number is backset and second is outside....so a 2 + 5 is wider than a 5+2....


Borrowed from the web...


How do I read ATV wheel sizing specifications?

Example 1:


12 x 7 4/110 Front


Wheel Diameter = 12"
Wheel Width = 7"
Number of Bolt Holes = 4
Spacing of bolt holes = 110 mm (measured from center of one bolt hole across center of wheel to opposite bolt hole)
Wheel Axle = Front Axle

Example 2:


10 x 8 3+5 4/4


Wheel Diameter = 10"
Wheel Width = 8"
Wheel Offset = 3" mounting centerline to inside wheel edge and 5" mounting center line to the outside wheel edge Number of Bolt Holes = 4
Spacing of bolt holes = 4" (measured from center of one bolt hole across center of wheel to opposite bolt hole)
*Offset notes: Most ATV wheels are centered, with no offset. In that case, the offset is not listed as part of the wheel sizing, like example 1. (If you wanted to state the offset of Example 1, it would have a wheel offset of 4+4. Its mounting surface is 4" from the inside and 4" from the outside wheel edges.)
Conclusion: A 3+5 Rim will sit wider on a quad than a 4+4 Rim; 1" wider per wheel, 2" wider across track width.

first # is inside second # is outside. So 2+5's stick out farther than 5+2's the 2+5's are what are referred to as "reverse offset"

Sigepmock and tomfish 1 I stand corrected. Thanks for setting this old guy straight.

Here's a good diagram showing the two different offsets.

http://us.st11.yimg.com/us.st.yimg.com/I/w..._1921_164274272