i got both scooter and sportbike

scooter nmax
-150cc/ with tire 13inch rim, 110/70 front and 130/70 back

sporbike r25
- 250cc with tire 17inch rim, 120/70 front and 140/60 back

- tried corning at ulu yam/genting, karak/bukit frazer with my scooter , its good feeling, but you need to find good tire and suspension. then u can layan corner like pro. but the problem with skuter is the low clearance, so when you corner at max angle, ur tongkat/eksos might drag on tar road, which is not ideal. luckily after i change to other tire shape like Pirelli angel GT, its non issue for me anymore.

for r25, because it hv 17inch rim, high clearance, can corner more angle because its design for it.

as for the suspension, scooter normally at the back hv double absorber, short fork infront.
compare to normal sportbike hv mono suspension with USD fork.. these suspension also play important part when cornering.

plus 17Inch is better when u go rough road, pothole etc, that why most of the adventure or offroad bike hv bigger wheel. like 19, even 21inch.