so i have been doin some reading and saw that people have been putting 170's on thier f2's... just curious about others opinions on what tire brand and model they like.... riding here in the state of WA ive been diggin the michelin pr2's. would love to hear what youve ran and what youve liked best...

 

The stock size, as you probably already know, is 160, but many F2 riders run a larger than "called for" size on their rear rim... many riders of any kind of bike do that, for that matter.
I would definitely say that it is "not recommended", but there will be 100 guys that agree with that, and then an equal amount of guys who tell you it's not a problem... either way, there's no denying that a 170 on the stock 4.5 inch rim will deform the tire's profile somewhat.

What a lot of guys do, myself included, is mount an F3 rim on the rear (5 inch), and then you can run a 170 with no issues whatsoever.
I personally run Dunlop's Spormax Q2 tires on the street, and really like them - I've been running those for quite some time now, and with the 170 on the F3 rim, at the correct pressure, I get more mileage out of the rear tire, than I did with the stock setup.

The F3 rim is an easy fit, just make sure that you use the spacer from the F3, on the brake-side - the sprocket-side spacer is the same - the cush drives are fully interchangeable.

 

I purchased my bike with a brand new set of Michelin Power Pures. they are a very sticky tire, this is all I have owned so I have nothing to compare to, but two riders in my group have said they would switch to mine, as they like the way they feel while riding, so that must be good for some comparison.

 

Thanx JNS and Neon... good info... much appreciated!