Join Date: May 2005
Location: Little Elm, TX, USA
Entirely depends on your riding style and conditions.
Are you riding mostly around town? Back roads? How heavy are you? What's the temperature outside? Road conditions? Etc., Etc.
I ride @ 38 rear, 36 front on my SS around town commuting and have never run into a single issue, same tires, same bike out at the track, I'm at 26-27 rear, 27-28 front.
I also get about 8k miles out of a tire when only commuting. And have thus far gotten 8 track days + some commuting out of the tires I have on there now (Pilot Power 2CTs) and still have plenty more tread left. Will likely last me the rest of the year (3 +~1 more track days).
A flat number as a recomendation without some sort of explination as to what kind of riding you're going to be doing doesn't make a whole lot of sense to me, sorry.
FOR SALE - 2002 900SS: Galfer Wave rotors + Carbon front fender + Ducati Performance levers & high mount carbon cans + Cycle Cat clip-ons & triple tree + Evoluzione Slave Cylinder + Motowheels Slipper Clutch + Power Commander w/ custom map + Air box mod & K&N + MBP Touring Wind Screen + Penske front fork rebuild