|Front tire seems to have a wear pattern more to left.||Texbaz|
Aug 16, 2001 3:30 PM
|I have a new bike, with a Reynolds Ouzo comp fork. I have Michelin Axial
Carbon tires on some Mavic Cosmos wheels. When riding and looking down on
the front tire, the wear pattern seems to be more to the left than in the
center. I wonder if it is an optical illusion accented by the 2 yellow
stripes that are on the circumference of both side of the tire. Maybe the
stripes are at different heights on the tire.
The wheel centers up in the fork just fine so I don't think it could be a
dish problem. when riding, the bike does not drift or pull. Do I need to be
concerned? I have never noticed this on any of my other bikes.
|re: Front tire seems to have a wear pattern more to left.||nuke|
Aug 16, 2001 6:22 PM
|Yes! You should take your bike immediately to your local bike shop and ask for a computerized front end aligment!
It's gotta be an optical illusion. Based upon the downward pressure, the tire would center itself. The only way I could think that it wouldn't would be a relatively noticealbe manufacture defect where the rubber on 1/2 the tire is significantly thinner than the other side. I seriously doubt this would be the case. I've had tires with lines on 'em and rarely are the lines centered.
|re: Front tire seems to have a wear pattern more to left.||Skip|
Aug 16, 2001 8:00 PM
|I would bet that your wear pattern is the result of the way the roads are sloped for water drainage, ie, they're not perfectly flat, but slope downwards toward the shoulders. As you ride, you tend (average) to ride upright to gravity, and not perpendicular to the road surface, resulting in a faster wear pattern left of center.|
|well, DUHHH !!!!!!||Rusty McNasty|
Aug 17, 2001 3:53 AM
|unless you are in the habit of riding AGAINST traffic, of COURSE the left side is going to wear faster!|
|aren't you a ray of sunshine||onrhodes|
Aug 17, 2001 4:23 AM
|Geez, aren't you just one of the most polite people on this forum.|
|Hey Rusty! Why don't you just slam the guy! (nm)||keith m.|
Aug 17, 2001 5:56 AM
|I'm with rusty & skip--it's the road crown||cory|
Aug 17, 2001 8:06 AM
|Noticed the same thing a few years ago, and it worried me until I figured it out--you're riding on a surface that slopes gently from left to right. I'd never noticed it on my other bikes, either, but when I went back and looked, it was there.
Tread doesn't matter much on pavement, and you can probably just turn the wheel around or remount the tire in the other direction to even out the wear.
|NO NO NO||jtolleson|
Aug 17, 2001 9:13 AM
|Do not ever reverse the mounting of a tire after riding. It is dangerous. When your tire is worn out, replace it. Don't flip it around.|
Aug 17, 2001 1:33 PM
|Speicifcally what is the danger? Why don't you take a look at what the Society of Automotive Engineers (SAE) and billions of miles has to say? Ever take and pass a college level course in automotive engineering? I have. You can flip the tire around until the cows come home - all those with tread sepration problems raise your hands. Ever wonder how many people put the tire on with the same rotation direction after fixing a flat. Hint, that would be 50% on any given occurence - except for you. |
You've gotta stop repeating urban cycling legends and stop to think what is their basis.
Do you work for Ford or Firestone?
Aug 17, 2001 3:11 PM
|First of all, no need to get profane, nasty, or insulting. |
First off all, some tire retailers even include this is the paper warnings. It is the same principle for motorcycle tires. Tread wear starts to work rubber into certain patterns and certain strong and weak sports. Reversing it can torque it differently. That's why most tires are marked with rotation direction on them. Have you ever wondered why?
And there is really no need to treat me like that. I'm just an ordinary gal, with a fair amount of exsperience but also who has listed to a fair amount of good advice.
|Wrongamundo, again.||grzy mnky|
Aug 17, 2001 5:29 PM
|Experience is one thing - technical knowledge is another. Perhaps you'd like to learn something and stop perpetuating urban cycling legends? |
First bais ply tires were rotated left to right on cars for many years at the tire manufacuters advice. Then came steel belted radial tires and they felt that you should only rotate tires fore and aft and not allow rotation direction to be reversed. then the tire mfr.'s reversed their position and said it was OK, and in fact you *should* do it.
Now on to bike tires which are bias ply. Retailers are simply trying to cover their butts six ways to Sunday from getting sued - not that it really prevents anything. Getting even wear dsitributed over the entire contact patch is *exactly* why tires are reversed. They last longer or haven't you maintained a car? The rotation direction is there b/c the tread patterns are no longer symetical so you get better grip if the tire rotates in the direction desinged not for wear. Since you read all the labels you've no doubt noticed that MTB tires lead the way and that there are many tires that are used rotation direction on the front and another on the rear and even some that rotate one way for dry conditions and another for muddy. Specfied rotation direction is all about grip, not wear. Most road bike tires are symetric so direction isn't an issue.
BTW - Drop the skirt unless you want to make an issue out of it - I don't care if you're a hermaphrodite.
|I run Michelins on my car...||nova|
Aug 18, 2001 12:34 PM
|...and one of the tires suffered a nasty gash a couple of months ago. It required a whole new tire.
First point: Although I didn't know it at the time, my tires are "run flat-capable" and I didn't even know the tire was flat until
I actually saw that it was deflated. I had been driving around on it at 60MPH and the tire didn't feel or sound any differently.
Second point: After learning that my tires are in the neighborhood of $180 each, I also learned that they are DIRECTIONAL. According to manufacturer specs (both the car maker and the tire maker), the tire MUST spin in only ONE direction. I've had my car up to 110MPH, with plenty of room left over to accelerate, and there is no way that I'm going to deviate from Michelin's recommendation.
I don't beleive that the directional rule applies to the Michelin tires on my bike, but there is no doubt about it on the car.
BTW: After being in school for 21 years (multiple degrees - whoopee!), I've learned that the more you know, the more you should realize that you don't know much. Unless you are ignorant of course, in which case you think you know everything. Education is not analogous to intelligence.
|I agree with you nova.||Leelee|
Aug 19, 2001 7:05 AM
|Hey grzy mnky: nova is talking about you.
You going to attack me too little boy?
Aug 19, 2001 4:38 PM
|Car tires in this situation are different. High performance tires have a specific tread that is very directional for proper adhesion to the surface, not spin direction that's why the orientation in there. There are tires out there that have a specific radial pattern as well. But generally speaking it's all about traction not treadwear. Road bike tires don't have tread, therefore, there is no problem running them in either direction.|
Aug 17, 2001 3:13 PM
|I'm not over this issue. |
I'm tired of people treating me like crap on this board. I have never disrespected another rider for disagreeing, and I've never claimed to be an engineer.
I follow the tire rotation markings on my tires, and the written guideline that sometimes come in packages, and articles in Bicycling mag. Have I run tread tests? No. But neither has any else on this board I'd bet.
Why are people here so friggin' nasty?
|More...||Laughing at the greaser monker|
Aug 17, 2001 4:38 PM
|The people here are nasty nbecause most of them are brain dead idiots who have nothing better to do but blowup on an anonymous chatboard after they have been yelled at by their boss for not properly flipping the burgers at lunchtime. When you start to see the self-professed "experts" quoting their vast experiences obtained from a community college automotive course you know its time to just kick back and have a good laugh. :-) Ride on!|
Aug 17, 2001 5:33 PM
|Cornell University - you've heard of it? Some people think it's almost as good as your community college and AA degree. Is it any wonder why most people in the bike industry are lowly paid?|
|More...people laugh AT you grzy brain||Abbs|
Aug 18, 2001 7:29 AM
|You are a little geek wimp. I can only imagine what an idiot you really are.
I bet you have all sorts of sexual problems based on all your inadaquacies.
Aug 17, 2001 5:41 PM
I don't have an issue with you per se - just can't stand it when people post crap, it bugs me even more when they defend it. Call me the correctness czar.
I've studied the tests - it's quicker. There porbably is someone out there that has run the tests lurking in the shadows. The Ford Firestone thing was a joke. Sorry.
Qcuik, which way does a Conti 3000 get rotated?
Bicycling Rag isn't worth the slick glossy paper it's written on. It's the USA Today for cycling people with short attention spans.
Aug 17, 2001 7:42 PM
|Grz Monkey typically does offer good advice. But he also has been known to taint it with less than receptive anecdotes. So I'll thank him for his advice. And in turn offer some to him. Maybe you should take some remedial classes in interpersonal relations at Cornell Community College. As long as you're living on this planet, you'll probably deal with people. Maybe you should take some time to learn how to deal with them as you do with the technical info you handle.
To the offended: Realize that some people are just going to speak their mind and many times don't really mean a personal attack by it. I usually just take it into account that some people are relationally challenged and go my way, taking the good stuff with me.
Just go ride, buds...
|Grzy mnky has a fragile ego. He makes himself feel||Abbs|
Aug 18, 2001 7:20 AM
|better by trashing others. He is always proclaiming his experience and expertise. He tells us this over and over again. Someone once said he was all mouth and no ears. Perfect!
He truley is a little man. (probably in more ways than one.)
|personally, I like the grzy mnky||club|
Aug 18, 2001 11:03 AM
|his postings just make those of us who DO know everything all the more rare and valuable|
|Whole lotta love!||keith m.|
Aug 17, 2001 3:51 PM
|whats with all the slammin going down?|
|Bullsh!t||Laughing at the greaser monker|
Aug 17, 2001 4:34 PM
|Do you need anyProzac big fella. Passing some Mickey Mouse college automotive course doesn't impress me. i know lots of outright idiots with famcy college degrees. Ride on folks!|
|laughing AT the greaser monker||moe|
Aug 18, 2001 2:20 PM
|I know whay you mean. You should have read a post of his a few months back when he was trying to explain some simple physics. It was hillarious! He is clueless when it comes to engineering!
Hey grzy: F=ma man!
|maybe it'll kill me someday, but I've done it for 30 years||cory|
Aug 17, 2001 8:37 PM
|There was some reason not to change the rotation direction of old-style radial car tires, and some modern high-perf car tires are directional. Try as I might, though, I can't think of any reason not to swap bike tires. The stresses just aren't that high.
For the record, though, I'm a compulsive tire buyer--generally I DO buy new ones long before I really need them. It's cheap insurance on the 45mph descents around here.
|Wow, GM is getting beetch slapped.||Scy|
Aug 19, 2001 12:57 AM
|GM is a faithful contributor and often offers good advice. But, GM, you do need lessons in being a gentleman and/or not being a dweeb. |
People will respect you not for what you know, but for how you present it. If you're smart and educated, fine. But there's no need to flout your credentials. The value of your advice will be self-evident, if it has any worth. Your degree means very little here on this forum where there is no way to verify it.
Hey, I graduated in the top 2% of my college and then graduated from USC law, a national top twenty law school. But that by itself means sh*t. A lot of my collegues have similar credentials and are idiots; maybe I'm one too. Or maybe I just got my GED from Arkansas adult school; no one here will know.
Bottom line: I feel good about who I am. Not because I belittle others. Not because I went to a good school. Not because I make good money. I feel good about myself because I enjoy my life because life is sweet.
BTW: it is ridiculous to think that the direction of a road tire is relevant when your average lifetime tire speed is under 20 mph. But that is only my OPINION.
Aug 20, 2001 9:11 AM
|I agree that presentation is a significant part of the picture, but I'm not a lawyer, not am I likely to become one. "Enginerds" aren't known for being as diplomatic and they usually don't make good politicians. I don't mean to flaunt sheepskin since it never really gets you anything but the first interview, but there was a question of credibility and the assertion that no one had knowledge of tire testing. Stating the facts doesn't seem to matter when superstition is tightly held. |
When someone does the equivalent of screaming "NO NO NO" without basis I don't think it's unreasonable to call BS and attempt to back it up.
I'll work on my "bedside manner".
Good point about life being sweet.
Aug 20, 2001 1:01 PM
|You should also work on your engineering and physics because you are lousy in both.|
Aug 20, 2001 1:04 PM
|Basis? Anything I've posted is fair game. |
I guess this is scary b/c I could be working on something involving human safety. Please don't tell my boss.