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DannoXYZ · September 5th, 2017, 04:49 PM

I tried new combination these past couple weeks. Two weeks ago at Laguna Seca and last week @ Sears Point/Sonoma.

front: 110/70-17 Dunlop Alpha-13 SP @ 27psi
rear: 150/60-17 Dunlop Alpha-13 regular @ 25psi

I must say that Alpha-13 SP has much softer casing than any tyre before. I was practically able to mount it by hand without any tyre-levers! Well, used levers for last 6" of bead and that was it.

Using sticker front-tyre really helped balance bike's handling given vastly different tyre sizes (stock front with +2 size increase in rear). Front-end still pushed at limit, but did so at higher grip-level and slid more gently and controllable than before with regular A-13.

Still can't get 150 back-end to let go no matter what kind of maneuvers I did. Maybe if I did abnormal stuff like slam on back brakes I can get it to come around. Full-throttle in corners just increased speed and tucked front-end. So there's still mis-match with using 110/150 tyres on N250R, even with stickier front tyre.

Once I go through these Alpha-13s, I may try Bridgestone V02 GP125 90/120 soft/medium combo that fast riders are using. Lower rotational-weight for faster acceleration and even better grip!

September 5th, 2017, 04:49 PM	#84
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	I tried new combination these past couple weeks. Two weeks ago at Laguna Seca and last week @ Sears Point/Sonoma. front: 110/70-17 Dunlop Alpha-13 SP @ 27psi rear: 150/60-17 Dunlop Alpha-13 regular @ 25psi I must say that Alpha-13 SP has much softer casing than any tyre before. I was practically able to mount it by hand without any tyre-levers! Well, used levers for last 6" of bead and that was it. Using sticker front-tyre really helped balance bike's handling given vastly different tyre sizes (stock front with +2 size increase in rear). Front-end still pushed at limit, but did so at higher grip-level and slid more gently and controllable than before with regular A-13. Still can't get 150 back-end to let go no matter what kind of maneuvers I did. Maybe if I did abnormal stuff like slam on back brakes I can get it to come around. Full-throttle in corners just increased speed and tucked front-end. So there's still mis-match with using 110/150 tyres on N250R, even with stickier front tyre. Once I go through these Alpha-13s, I may try Bridgestone V02 GP125 90/120 soft/medium combo that fast riders are using. Lower rotational-weight for faster acceleration and even better grip!