215/40-18

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215/40-18

Post  saber on Wed Feb 08, 2012 8:30 am

Has anyone put a 215/40-18 or a 225/40-18 on any bike yet? I have a Stryker and just wanting to know how it did in the corners.
Also has anyone increased the air pressure to curve the tire some (bubble the center out more), due to very little side walls on these low profile tires? To me it may bring the handling closer to stock handling, with a wide flat tire.
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Re: 215/40-18

Post  Doc on Wed Feb 08, 2012 9:36 am

I know of a couple that use a 215/45/18 on their 1800F's and ride the twisties without trouble. Twisted Evil
From my experience raising the pressures higher than you need, just makes the middle wear faster and doesn't make the way it rides any better.
You want the sidewall to flex to give yourself more of a contact patch.

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Re: 215/40-18

Post  saber on Wed Feb 08, 2012 10:42 am

What sidewall? Right now, all I see is 3/4" showing on the bike tire, I don't think there will be too much flex on the car tire version either.
Yes I am aware of the increased ware but compared to the weight and the thickness of the car tire I would think I could still get about 20000 miles out of a 30000 mile tire.
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Re: 215/40-18

Post  DarkFury on Wed Feb 08, 2012 8:48 pm

I am running a General G-Max 215/45 ZR 18 on my Fury and live it. I am not sure of the differences between a 215/40 and 215/45 but I have no problems cornering on my Fury. I run about 41 psi in my tire and it rides like a dream.



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Re: 215/40-18

Post  saber on Thu Feb 09, 2012 6:27 am

The 210/40-18 has an out side diameter of about 25.7 inches. That would cross to a 245/40-18, I will have to measure up in the fender and swing arm to see if the sides will fit, but as of right now that is the size I am looking at. It also looks as if most of these tires can handle 50 psi max, 41 lbs or so sounds about right. Contact patch should be around 8.5- 9 in on the road.
I am going to nix the idea of higher pressure.
What is funny, I am looking at tires that cost around $150-$200 and that is still cheaper than the replacement MC tire.
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Re: 215/40-18

Post  DarkFury on Thu Feb 09, 2012 11:06 am

I found the same thing with my Fury. The sport car tire was still cheaper than the stock MC tire. Twisted Evil Twisted Evil Looks pretty tough on the back of my Fury as well. thumbup
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