NO! and WHY WHY WHY?Hey guys, i was wondering what needs to be changed to use a 180/55 back tires and 120/70 front tires. Do i need to change the rims too? and what would be the advantage of using these tires on a 250cc bikes. Or is it better to just change the swingarms and everything with that of a CBR600?
thanks
well on my first trip to the track on the 250 i almost got it all the way to the edge maybe 1/4 inch away from the edge. as i get more accustomed to the bike and track and as i start going faster and leaning more i am going to need more tire. I would much rather have alittle wider rear tire that has 1/2"-1" of sissy strips then to go past the edge of a tire that isnt wide enough and go down.
Unless you go up a rim size as well ,that 150 tyre will just fall away at the edges and still land you on your ass as pegs & fairings ground out.
People told me that putting a rc51 front end on my VFR750 was stupid. They also told me that putting a rear wheel off a newer VFR800 that was 1/2" wider on the back with a 190/55 tire was stupid. I can honestly say that the combination of those two things have made that bike the most fun I have ever ridden. I take that thing way out of its comfort zone on the track and can honestly say that i can roll that 190/55 to the edge. I know there is no way i could ever go that big on the 250 and i dont want to. But measuring the width of the rim and the width of the inside of the tire i know i could get a 150 on the 250 with no problems. As a matter of fact the race-ready ninja 250's that they rent at the track run 150 width tires in the back and also a taller profile. They are less football shaped and more arced. Im not saying that the 140 is bad at all, but i believe a 150 can do nothing but help. Just because honda put that tire on there stock does not mean that it is the best tire for the bike and for its rider. They probably chose that tire because its cheap and fits in with the needs of most people and the most different type of riding conditions. For example i dont need a tire with so many rain grooves, as i will never ride my bike in the rain. Honda chose a well-rounded tire to meet the needs of many of its customers, many of which are new to the sport.
Do you know what size tire and wheel the Ninja had? The stock wheels are even narrower than the Honda. What tread profile shape will we end up with if we go to 120/ 70/ 17 and 150/ 70/ 17 on our stock wheels for the CBR250R and how will it effect cornering as the tire will have a rounder profile than it was designed for. Most replacement tires aren't offered in our size. Maybe that will change by next spring due to the large number of these bikes Honda is selling world wide.
Only because None of the better tires such as the Bridgestone BT-016 or Dunlop Roadsmart are being made in our size.
The rear might last 7500km. I will try to find another take off IRC for the rear by next spring and replace both the following year when the front goes at 15,000.
