My Sym Citycom has the same rim size.
Not a lot of manufacturers cater for our scoot tire sizes 110/70-16(52P) & 140/70-16(65P). I like these two:
1.) Metzeler Feelfree (not the Wintec - no sizes for our scoot)
2.) Pirelli Diablo
People have good reports of the Michelin Gold Standard too.
Sorry can't help you with prices as I;m in NZ.
Kiwiscoot
2008 Xingyue XY150T-5100kms of fun. Gone.
2008 SYM Citycom 300i 47000+kms, was a blast!! Sold now
2006 Vespa GTS250ie
In the market need scoot will do 190kph, 3l/100km, 20 000km service intervals,under $10 000, dual purpose to explore back country - where is it?! sigh!