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Registered
Join Date: Jun 2001
Posts: 273
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Tire Questions
I just got some new tires for the SC. The tires I removed were Dunlop SP Sport 5000s M&S. 220/50 x 16 rears, and 205/55x 16 fronts.
I plan to keep the tires I removed as they are in very good shape, just not what I wanted for DE or autocross. In my haste to have the new tires mounted, I forgot to tell the tire shop to mark the tire position before removal. Here are my questions: 1. Since these tires are non directional/(non rotational?), does it matter if they get remounted and put on a different side of the car? 2. If it does matter, is there a way I can tell what side they came off of? 3. If remounted and put on a different side of the car, will it cause an unsafe condition? These tires are in very good shape and only have about 6000 miles on them. Thanks JoeF |
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06-05-2002, 04:06 PM
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Join Date: Aug 2000
Location: $F Bay Area
Posts: 501
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It won't matter which side the tires are re-mounted on. Take a close look at the tread area and see if there's any alignment wear or if the tire is wearing perfectly even. I don't recall if the SP Sport 5000 is asymetrical where you'll have to mount the same side out each time, but if you're experiencing alignment wear try to flip the tire over...you'll get a bit more life that way.
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06-05-2002, 04:11 PM
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Alter Ego Racing
Join Date: May 2002
Location: Florida
Posts: 5,553
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I'm not a tire engineer but I have always been told that you should not change the rotational direction of a tire since the braking and acceleration forces could cause delamination.
I'm not a tire engineer but this has always sounded about right. Perhaps other Pelican heads can comment with better scientific knowledge.
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06-05-2002, 04:20 PM
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Platinum Member
Join Date: Jul 2001
Location: Leave the gun. Take the cannoli.
Posts: 21,128
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Juan, I have heard the same thing, but I am guilty of switching tires to the other side at track events to extend the life. I haven't had a problem (yet) but am curious what others have to say.....
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06-05-2002, 04:36 PM
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I believe that was the old thinking before all tires were radials. I'm pretty sure now it does not matter.
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06-05-2002, 05:35 PM
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Registered
Join Date: Jan 2002
Location: Danville,CA
Posts: 125
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You can X rotate radials today. In fact, many of the new car owners manuals suggest such providing you have a car with same size F & R tires and they are not directional. So to answer your question you can put them either side without hesitation. Also, if you have any feathering by putting the tire on the opposite side might actually quiet the tire noise.
Last edited by Gspin; 06-05-2002 at 05:47 PM.. |
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06-05-2002, 05:45 PM
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1983 Porsche 944 2.5 
