Like im trying to fin the difference in wheels i want and I'm not sure what to get because idk what these numbers mean.

NOTE: These are all the same Wheels just Different Numbers.

Rota J-SPL Wheels (15 x 6.5 / 4 x 100 / +35 )

Rota J-SPL Wheels (15 x 6.5 / 4 x 100 / +37 )

Rota J-SPL Wheels (15 x 6.5 / 4 x 100 / +40 )

Rota J-SPL Wheels (15 x 6.5 / 5 x 100 / +40 )

Rota J-SPL Wheels (16 x 7 / 5 x 100 / +40 )

So whats all these numbers mean?

 

I'll just use one as an example:

Rota J-SPL Wheels (15 x 6.5 / 4 x 100 / +35 )

The wheels dimensions: 15" tall, 6.5" wide
The bolt pattern of the wheel: 4 bolts at 100mm spacing
The wheels offset: +35mm

 

Damn thanks man I understood everything but the offset whats that mean?

 

Offset is the space from the center of the rim to the hub of the rim (where it mounts up). The lower offset you have, the bigger the lip will be and the more the lip will stick outside of the wheel well.

Example:

 

Per say you have a 15x8+0 wheel...with a 0 offset, the hub will bolt to the wheel directly in the middle (4" to the inner/outter rim from mounting point) of the rim. A positive mounting point will bring the mounting point closer to the outsider; negative pulls the mounting point inside.

It's moderately confusing because wheel height and width is measured in inches and offset is in mm.

 

perfect