John Schmidt
Member
Posts: 15223
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« on: February 12, 2016, 06:24:54 PM » |
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Britman had mentioned Definity HP100 a while back so I wanted to see it first hand. Pretty good looking tire with a rounded shoulder. Did some looking, found they're made by Cooper and from what I can tell have a fairly decent rep. for well under $100. Might give it a shot. For those in the know...what is meant by asymetrical vs. symetrical tread pattern?
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Rio Wil
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« Reply #2 on: February 12, 2016, 07:15:16 PM » |
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the unidirectional is the symetrical thread, the other two are asym....
sym....means the tread pattern are mirror images of each other
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John Schmidt
Member
Posts: 15223
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #3 on: February 12, 2016, 07:56:02 PM » |
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So, can anyone see any reason it shouldn't work good on the Valk? After seeing it in person I was ready to move on it, around $83 plus tax.
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #4 on: February 12, 2016, 08:08:04 PM » |
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the unidirectional is the symetrical thread, the other two are asym....
sym....means the tread pattern are mirror images of each other
Apparently not in tire lingo... symmetrical means there is no specified inside and outside and a wheel with that tire can be used on any corner of the car, assuming it's the right size. So, can anyone see any reason it shouldn't work good on the Valk? After seeing it in person I was ready to move on it, around $83 plus tax.
The only reason I can see is that it, like any car tire on a bike, is sure to cause flaming death. The tread pattern should be fine, though. |
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csj
Member
Posts: 992
I used to be a wolfboy, but I'm alright NOOOOOWWWW
Peterborough Ontario Canada
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« Reply #5 on: February 13, 2016, 03:03:20 AM » |
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As pictured in GR's diagram, I've had car tires both Symmetrical and Unidirectional.
Could barely tell the difference on my valk.
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A guy called me a Ba$tard, I said in my case it's an accident
of birth, in your case you're a self made man.
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The emperor has no clothes
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« Reply #6 on: February 13, 2016, 04:13:24 AM » |
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As pictured in GR's diagram, I've had car tires both Symmetrical and Unidirectional.
Could barely tell the difference on my valk.
+1 |
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Ken Tarver
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« Reply #7 on: February 13, 2016, 06:36:53 AM » |
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John,
I've used 2 different symmetrical tires on my GW, it works just fine. Like already stated, it is a mirror image, when looking at the tread, spin the tire 180* and it will look exactly the same.
I would not use an asymmetrical tire on the bike. It may not make 2cents worth of difference, just don't think I personally would use it.
In the picture of tread patterns...the one shown as "unidirectional" is actually a directional tread pattern. In tire lingo I've never heard of unidirectional, if any tread description of "unidirectional" fits a tread pattern it would be the symmetrical tire.
Ken
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Lyonardo
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« Reply #8 on: February 13, 2016, 10:11:17 AM » |
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Yeah, I was thinking about this whole tire lingo issue when I bought new tires last year. Technically, two of those tires are symmetrical. Notice that the "symmetrical" tread in the pic would look exactly the same if you flipped it 180 degrees. In math terms, that's "rotational symmetry". You could mount the tire in either direction and it would look and perform exactly the same. The "unidirectional" tire is an example of "mirror symmetry". That one is likely to make you hydroplane if mounted backward since it will suck water under the tire instead of pushing it away. the unidirectional is the symetrical thread, the other two are asym....
sym....means the tread pattern are mirror images of each other
Apparently not in tire lingo... symmetrical means there is no specified inside and outside and a wheel with that tire can be used on any corner of the car, assuming it's the right size. So, can anyone see any reason it shouldn't work good on the Valk? After seeing it in person I was ready to move on it, around $83 plus tax.
The only reason I can see is that it, like any car tire on a bike, is sure to cause flaming death. The tread pattern should be fine, though. |
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Rio Wil
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« Reply #9 on: February 13, 2016, 04:20:28 PM » |
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The idea with the tread being a mirror image, is the tire will behave the same when cornering either left or right. If the sipes on one side run (for lack of a better description) back to front and the other side run front to back, I think you can feel the difference when going into a curve and powering out. On my Pirelli P4's which I have a total of well over 140K miles on and which I just love, I can feel just a hint of "mushiness" "twitch" "wiggle" or something in left hand curves vs right hand......I am thinking that is due to the difference in the direction of the sipes and how the tread blocks contact the pavement. Note in the Pirelli photo the sipes and rain grooves are much more pronounced than the tire you are looking at and I only have a hint of something is not the same left to right......maybe even be my imagination.....  So bottom line, I think that tire would do well and the sipe direction is so almost the same, you won't know the difference. I am looking for another tire, P4's are kind of getting hard to find.....this tire looks like a candidate, wonder of it comes in a 205-65 size. I like the wide tread on the should with out many voids in it.  |
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h13man
Member
Posts: 1757
To everything there is an exception.
Indiana NW Central Flatlands
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« Reply #10 on: February 13, 2016, 04:38:49 PM » |
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I purchased P4+ at Sams Club a year ago for our SX4. Might check there.
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Tfrank59
Member
Posts: 1364
'98 Tourer
Western Washington
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« Reply #11 on: February 13, 2016, 07:25:24 PM » |
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So, can anyone see any reason it shouldn't work good on the Valk? After seeing it in person I was ready to move on it, around $83 plus tax.
Today I looked at my back tire and saw that it's gone--not quite 14 K on it and balder than I am. But I can't bring myself to put a car tire on her. I know you guys don't see a problem with it but I'm not a great rider and need a motorcycle tire. I just bought a Bridgestone on eBay and paid twice what you're paying here John. Call me a wimp but it's all about peace of mind.  |
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-Tom
Keep the rubber side down. USMC '78-'84
'98 Valkyrie, ‘02 VTX 1800, '96 Royal Star, '06 Drifter, '09 Bonneville, '10 KTM 530, '04 XR 650, '76 Bultaco, '81 CR 450, '78 GS 750...
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #12 on: February 13, 2016, 08:09:41 PM » |
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Today I looked at my back tire and saw that it's gone--not quite 14 K on it and balder than I am. But I can't bring myself to put a car tire on her. I know you guys don't see a problem with it but I'm not a great rider and need a motorcycle tire. I just bought a Bridgestone on eBay and paid twice what you're paying here John. Call me a wimp but it's all about peace of mind. You made an excellent decision by running a motorcycle tire. Neutral handling through the sweepers and steadiness on uneven surfaces are advantages worth having. I run a car tire but certainly don't think it's for everyone. |
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old2soon
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« Reply #13 on: February 14, 2016, 09:00:57 AM » |
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So, can anyone see any reason it shouldn't work good on the Valk? After seeing it in person I was ready to move on it, around $83 plus tax.
Today I looked at my back tire and saw that it's gone--not quite 14 K on it and balder than I am. But I can't bring myself to put a car tire on her. I know you guys don't see a problem with it but I'm not a great rider and need a motorcycle tire. I just bought a Bridgestone on eBay and paid twice what you're paying here John. Call me a wimp but it's all about peace of mind. Austone Taxi Tyre. I'm at 70000++ miles D/S and the Austone MAY be the best D/S tire I've been on. Rain-dry-high speed-Sustained triple digit-over 100 M P H-worked the Dragon-Moonshine 28 and other twisty roads and nary a peep outa me or the A T T. Goin to W V in June and gonna work it some more. RIDE SAFE. |
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Today is the tommorow you worried about yesterday. If at first you don't succeed screw it-save it for nite check. 1964 1968 U S Navy. Two cruises off Nam.
VRCCDS0240 2012 GL1800 Gold Wing Motor Trike conversion
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Fazer
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« Reply #14 on: February 15, 2016, 08:01:01 AM » |
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Austone Taxi Tyre. I'm at 70000++ miles D/S and the Austone MAY be the best D/S tire I've been on. Rain-dry-high speed-Sustained triple digit-over 100 M P H-worked the Dragon-Moonshine 28 and other twisty roads and nary a peep outa me or the A T T. Goin to W V in June and gonna work it some more. RIDE SAFE.
Man, I am glad to see this post about the ATT--it's what I have plans for when my E3's are ready. |
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Nothing in moderation...
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Skinhead
Member
Posts: 8727
J. A. B. O. A.
Troy, MI
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« Reply #15 on: February 15, 2016, 08:24:32 AM » |
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Everybody knows a non symetrical car tire will not work on a motorcycle even more than a symetrical cart tire won't.
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 Troy, MI |
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Bigwolf
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« Reply #16 on: February 15, 2016, 08:28:54 PM » |
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I just received a Exelera Alpha tire in 205/60 16. I like the look of it and with a utog of 300 it should stick. My old Falken has been great and still has some miles in it but I believe it is time to change it out. They don,t make the ziex in a usable size anymore. So I had to find something else. The alpha was less than $60.
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