Wide tyre COSA RIM


Can you tell me what kind of tyre I can use on a COSA rim, with a P series engine, without using the SIP wide tyre conversion because I don`t want to cut the tube/axe of the engine.

Thanks for any hint.

I`ve been told that with 2 biggest „half rim“ from a PX, I can use 130/70 10 tyre, but does a 110/90-10 or 120/90-10 can fit ?

all 100`90 and 100´80 tyres. but I would prefer a sip-rim for 100er tires. with only using a cosarim, the tire will touch the clutch cover or fork.

rgds, alex