Kawasaki Ninja 300. Petrol and oil type?

[MarkW]

The required pressures are written on the chain-side swing-arm, as well as on the sidewall of the actual tyres...

Correct as far as the sticker on the chain guard or swinging arm but totally wrong as far as the sidewall of the tyre. The pressure on the sidewall of the tyre is the MAXIMUM recommended pressure for the tyre at the MAXIMUM load for the tyre - NOT the recommended pressure for that tyre on every motorcycle.

I run BT45's on my 248kg 650 Honda and the tyre pressures for my BT45's will be hugely different to those of a Kawasaki 300 even though the tyres are very similar in size.

I run 31 - 35 psi in the 120/70 17 front depending on summer/winter, hot/cold temperatures and load. The rear 140/80 17 gets 34 - 37psi depending on the same variables already listed.

I wrote a detailed post some years ago in the Tyres section of this website on how to get to good working tyre pressures for normal road use on almost any motorcycle with street legal tyres fitted.

[Scubbo]

TIRE PRESSURE

[5ive]

Correct as far as the sticker on the chain guard or swinging arm but totally wrong as far as the sidewall of the tyre. The pressure on the sidewall of the tyre is the MAXIMUM recommended pressure for the tyre at the MAXIMUM load for the tyre - NOT the recommended pressure for that tyre on every motorcycle.

I run BT45's on my 248kg 650 Honda and the tyre pressures for my BT45's will be hugely different to those of a Kawasaki 300 even though the tyres are very similar in size.

I run 31 - 35 psi in the 120/70 17 front depending on summer/winter, hot/cold temperatures and load. The rear 140/80 17 gets 34 - 37psi depending on the same variables already listed.

I wrote a detailed post some years ago in the Tyres section of this website on how to get to good working tyre pressures for normal road use on almost any motorcycle with street legal tyres fitted.

He didn't specify what size tyres, so yeah, it was kind of implied that he should read what was actually written on them...

[BrendonF]

Yeah man, they're only 17s: 110/70 and 140/70.

I bet there are a lot of smaller bikes out there with over-inflated tyres though

I bet there is. with tyres that skinny it would make cornering easy and shouldn't have any chicken stripes.

[caspernz]

He didn't specify what size tyres, so yeah, it was kind of implied that he should read what was actually written on them...

Nah, what's on the sidewall is normally max pressure for max loading. The best guide for inflation pressure is the bike manufacturer, so as per the manual.