Michelin Pilot Road 3s...I joined the club

[NightRider_imp]

So, you talked me into it. What opinion does the shop book have on acceptable alternative tire sizes? Anyone? Thanks.
You know, like my auto owners manual even. It lists two sizes acceptable for my car. The dealer will sell and mount either but not something else. I suppose it is because he is a good dealer and I would not change tire sizes on my car to something other than that specified. Especially if I then put my kid in it or risk someone else's kid in a vehicle I share the road with while driving my car with tires not meant for my car.

So I need to get this right. What does Honda say?

10W30

Seriously, not trying to talk you into it Nightrider, use whatever tires you choose for your vehicle, use whatever weight oil, use whatever brake pads, or spark plugs, or grade of gasoline. Check your valves at whatever mileage you want, change the air filter when you want, change the oil at whatever mileage you deem appropriate, use whatever oil filter you want, change your clutch and brake fluids when you want, or go exactly as Honda recommends for all that stuff. It's your bike.

10W30

Seriously, not trying to talk you into it Nightrider, use whatever tires you choose for your vehicle, use whatever weight oil, use whatever brake pads, or spark plugs, or grade of gasoline. Check your valves at whatever mileage you want, change the air filter when you want, change the oil at whatever mileage you deem appropriate, use whatever oil filter you want, change your clutch and brake fluids when you want, or go exactly as Honda recommends for all that stuff. It's your bike.
I'm afraid we are discussing something more serious than oil viscosity. We are instead discussing using the wrong tire size. using a wrong tire size is unsafe. Unsafe for the rider and the family car approaching you on that curve when your bike handles incorrectly when it really counts.

So, I am afraid it is not just my choice in this instance if I endanger others in the interest of experimenting with my bikes handling, and that is what I would be doing, outside the track. While I might experiment with my bike's oil I will not make that oncoming family carload of kids pay for my indulgence with tires.

I would not experiment with my car's tires for the same reason so why do so with my bike?