OK, I'm pulling my (sparse) hair out over this issue and I know there are folks who have gone down this road already. I'm not finding a readily available answer and hope you will respond.

XRR sumo conversion is in the stage of assembling pieces and parts. I have some excellent Warp9 wheels in the 17 inch size. The front is 3.5 x 17, the rear is 4.25 x 17.

Which size tires should I use and why?

Front: 110 or 120 / 60 or 70 /17

Rear: 130 or 140 or 150 or even 160 / 60 (no 70's) / 17

I see packaged sets on sleazBay and have offers for other tires both locally and on other sites........

I don't want to mod the rear of the bike at all, looking for good chain and swing-arm clearance. It's just a fun hooligan bike and I'm not a racer or overly aggresive.........

Whatcha got for advice?

160 is too large for the 4.25 rim, its very rounded and not normal. the correct answer is a 150. Some will say 160 but there not meant to be on that size a rim, just call dunlop up , or bridgestone, thell tell you that. But it is being done but not right. I have a set also of the qarp9s and ill use a 150, even though i want to go larger but cant

I would advise to go with a 120-70 in the front and a 150-60 in the rear.
Works well for me!! :thumbsup:

I put the smallest Distanzia tires that would fit my Behr rims, similar to yours. Distanzia is an OK price and great for occasional dirt road. I have gone through several sets and continue to be impressed. I get about 2500 miles on a rear.

SASM said:

+1 :thumbsup:

That's the size that I run on my bike (XRL), using Conti-Force SM tires on the exact same size rims as the OP. All I had to do was cut off one of the chain guard mounts from the swingarm ... but you wouldn't have to worry about that on an XRR. :cheers:

Thanks for those replies..........I had considered going a bit smaller on the rear, down to a 140/60/17 but your responses confirmed my other reads.

Interesting that some folks run a DS tire like the Distanzas vs a pure roadie like the Conti............I was planning on pure roadies since I have an XRR with knobs....

Anybody else is welcomed to kick in their thoughts...........

:busted:

I really like the Distanzia I'm running (front only so far), and it even works pretty well for fooling around on the track.

Infidel said:

Im like you i have 2 plated Rs and ones my dirt so my newest is all street, im going with Conti SM tires i think, havent bought them yet but will soon and think thats my tire of choice. I say go all street tire!