TZMike
New Member
No joke. That seems a bit oppressive. Approved size and brand? Wow.
Having roads without any speed limits they want to ensure that the equipment used to "race" around on them can handle the high speed stresses...
No joke. That seems a bit oppressive. Approved size and brand? Wow.
I raced a Honda CBR250 on the Pirelli Rosso II and they stuck real well. They were even fine in the rain. I am giving serious thought to slicks for the RC390. A set of slicks for a RS125 GP bike should fit and provide excellent traction. Down side is having to have rain tires too. parillaguy
Are you sure RS125 tyres would fit? I considered that option too, but running them cut for the road, but according to the Honda manual the RS125 uses a 90 front, and a 120 rear, and the RS250 uses a 120 front, and a 165 rear, can you even get slicks in a 110, and a 140?
Look to the supermoto world, I think they are around that size.
I believe the stock rear tire, Rosso II 150/60ZR17, of the Rc390 is too skinny. I'd like to change it to the max width without changing the 4 inch rim. Has anyone changed the stock tire to a wider one?
Was surprised after some great twisties today how big chicken strips were on stock pirellis...I don't have chicken strips on my street triple r at all. Do the 140's have better tire usage when on its side? Better profile?
Was surprised after some great twisties today how big chicken strips were on stock pirellis...I don't have chicken strips on my street triple r at all. Do the 140's have better tire usage when on its side? Better profile?
Yes, I believe the 150's too big for the rim, I installed a 140/70 and now the whole tyre gets used, just like the front, it also adds a little more ground clearance.
Explain to me why this is an issue (I actually don't understand). Wouldn't it be better to still have a full-size contact patch at full lean? No chicken strips means you're to/off the edge of the tire and reducing your contact patch when you need it most. What am I missing?
I'm no trye expert, but this is my take on it, a motorcycle trye is designed to have a certain profile, some have more of a round profile, and some have more of a triangular profile, eg... a bigger contact patch when lent over, when you use a trye that's too big for the rim it alters its profile, you're pulling the beads of the tyre closer together than it was originally designed for, and the edge of the tyre gets pulled around with it, that's why you have chicken strips, you can still ride it with no problems, you may not even notice a difference, bit its not ideal.
I used to have a Suzuki TL1000S years ago, I believe it came with a 190 rear tyre from the factory (probably because a bigger tyre looks cooler) I put on a 180 and it improved the bikes handling, quicker turn in/more responsive, I'm guessing because the 180 was more triangular, and generally speaking the wider the tyre the more round it is (look at those massive 250 rear tyres on those custom bikes) so you're not necessarily reducing the contact patch, in some cases the contact patch when lent over may actually be slightly bigger.