Originally Posted by BlueLghtning
I'm hoping with an 18" rear tire you'll get better tire choices that what you have in the 150/70-17. I guess if it was similar in size to what the KTM 950/990 runs that would work. I believe the 950SE runs an ever narrow rim for even better 18" tire choices, but I'm not sure how skinny you can go on the rear?
I am working to build a 17x 3.5" and 18x 3.5" rim options. This gives the widest range of tires to fit. But wider and narrower rims could be built to your specs. This size could fit most 130-140-150 size tires and is a strong rim setup.
Personally I don't like the skinny rim on the 950 SE, I feel it's too narrow and you never hook up with all the power. I prefer the 3.5".
The DL650 is down on power from the KTM 950, but you can only get so much to ground anyways in the dirt so I feel the 650 engine will offer a good power to tire life/traction compromise. The weight of the CJDL-650R and KTM 950 SE are pretty close now.