All I have had my 2010 YZF R125 for about 5 weeks. Until the past 2 weeks I have not had any handling issues but recently felt the handling drop to the point whereby I almost lost all confidence to ride it - well I certainly wasn't riding it a lot. I believed it was a tyre pressure issue and recognise that I hadn't addressed this since I owned the bike, a shortfall definately. However, I read the manual (something that my searches before I posted suggest) and it states the following: Front: 25 PSI Rear: 29 PSI Therefore I checked this and my tyres were over this amount. So, I started to deflate the tyres to the recommended pressure in the manual. The handling got worse. Of course during this time I was cursing the dealer who sole me the bike thinking that it after 5 weeks the pressure was more than what it should have been then what was it when I picked it up. However, yesterday I checked the tyres themselves and they simply state 33 PSI, same front and back. There is no minimum, maximum or recommended, simply 33 PSI. So I took it to a petrol station and filled them and checked with my gauge. They are not around 33 PSI, but not exactly, and the handling is as it was before. I am thinking that the dealer filled them correctly and that I was wrong to reference the manual and the statement on the tyres is the one to follow. My concern is that the searches I have done here on tyre pressure all suggest that the manual is closer to the correct pressure than what I have read on my tyres, and whilst it might feel better to me it might not be safe. Is there any one out there that know better than me that can advise, and is there anyone out there that has a 2010 recent purchase that can confirm that their tyres state 33 PSI and runs on that? Many thanks. Poch.